Solve (2+1/x)^2/1+x-(1-1/x)^2*(x+1/x-2)-frac{2x+1}{x^2+x}

$$\frac { ( 2 + \frac { 1 } { x } ) ^ { 2 } } { 1 + x } - ( 1 - \frac { 1 } { x } ) ^ { 2 } \cdot ( x + \frac { 1 } { x } - 2 ) - \frac { 2 x + 1 } { x ^ { 2 } + x }$$

Evaluate

$$-x+4-\frac{4}{x}+\frac{5}{x^{2}}-\frac{1}{x^{3}}$$

Short Solution Steps

To add or subtract expressions, expand them to make their denominators the same. Multiply 2 times \frac{x}{x}.

$$\frac{\left(\frac{2x}{x}+\frac{1}{x}\right)^{2}}{1+x}-\left(1-\frac{1}{x}\right)^{2}\left(x+\frac{1}{x}-2\right)-\frac{2x+1}{x^{2}+x}$$

Since \frac{2x}{x} and \frac{1}{x} have the same denominator, add them by adding their numerators.

$$\frac{\left(\frac{2x+1}{x}\right)^{2}}{1+x}-\left(1-\frac{1}{x}\right)^{2}\left(x+\frac{1}{x}-2\right)-\frac{2x+1}{x^{2}+x}$$

To raise \frac{2x+1}{x} to a power, raise both numerator and denominator to the power and then divide.

$$\frac{\frac{\left(2x+1\right)^{2}}{x^{2}}}{1+x}-\left(1-\frac{1}{x}\right)^{2}\left(x+\frac{1}{x}-2\right)-\frac{2x+1}{x^{2}+x}$$

Express \frac{\frac{\left(2x+1\right)^{2}}{x^{2}}}{1+x} as a single fraction.

$$\frac{\left(2x+1\right)^{2}}{x^{2}\left(1+x\right)}-\left(1-\frac{1}{x}\right)^{2}\left(x+\frac{1}{x}-2\right)-\frac{2x+1}{x^{2}+x}$$

To add or subtract expressions, expand them to make their denominators the same. Multiply 1 times \frac{x}{x}.

$$\frac{\left(2x+1\right)^{2}}{x^{2}\left(1+x\right)}-\left(\frac{x}{x}-\frac{1}{x}\right)^{2}\left(x+\frac{1}{x}-2\right)-\frac{2x+1}{x^{2}+x}$$

Since \frac{x}{x} and \frac{1}{x} have the same denominator, subtract them by subtracting their numerators.

$$\frac{\left(2x+1\right)^{2}}{x^{2}\left(1+x\right)}-\left(\frac{x-1}{x}\right)^{2}\left(x+\frac{1}{x}-2\right)-\frac{2x+1}{x^{2}+x}$$

To raise \frac{x-1}{x} to a power, raise both numerator and denominator to the power and then divide.

$$\frac{\left(2x+1\right)^{2}}{x^{2}\left(1+x\right)}-\frac{\left(x-1\right)^{2}}{x^{2}}\left(x+\frac{1}{x}-2\right)-\frac{2x+1}{x^{2}+x}$$

To add or subtract expressions, expand them to make their denominators the same. Multiply x-2 times \frac{x}{x}.

$$\frac{\left(2x+1\right)^{2}}{x^{2}\left(1+x\right)}-\frac{\left(x-1\right)^{2}}{x^{2}}\left(\frac{\left(x-2\right)x}{x}+\frac{1}{x}\right)-\frac{2x+1}{x^{2}+x}$$

Since \frac{\left(x-2\right)x}{x} and \frac{1}{x} have the same denominator, add them by adding their numerators.

$$\frac{\left(2x+1\right)^{2}}{x^{2}\left(1+x\right)}-\frac{\left(x-1\right)^{2}}{x^{2}}\times \frac{\left(x-2\right)x+1}{x}-\frac{2x+1}{x^{2}+x}$$

Do the multiplications in \left(x-2\right)x+1.

$$\frac{\left(2x+1\right)^{2}}{x^{2}\left(1+x\right)}-\frac{\left(x-1\right)^{2}}{x^{2}}\times \frac{x^{2}-2x+1}{x}-\frac{2x+1}{x^{2}+x}$$

Multiply \frac{\left(x-1\right)^{2}}{x^{2}} times \frac{x^{2}-2x+1}{x} by multiplying numerator times numerator and denominator times denominator.

$$\frac{\left(2x+1\right)^{2}}{x^{2}\left(1+x\right)}-\frac{\left(x-1\right)^{2}\left(x^{2}-2x+1\right)}{x^{2}x}-\frac{2x+1}{x^{2}+x}$$

To multiply powers of the same base, add their exponents. Add 2 and 1 to get 3.

$$\frac{\left(2x+1\right)^{2}}{x^{2}\left(1+x\right)}-\frac{\left(x-1\right)^{2}\left(x^{2}-2x+1\right)}{x^{3}}-\frac{2x+1}{x^{2}+x}$$

To add or subtract expressions, expand them to make their denominators the same. Least common multiple of x^{2}\left(1+x\right) and x^{3} is \left(x+1\right)x^{3}. Multiply \frac{\left(2x+1\right)^{2}}{x^{2}\left(1+x\right)} times \frac{x}{x}. Multiply \frac{\left(x-1\right)^{2}\left(x^{2}-2x+1\right)}{x^{3}} times \frac{x+1}{x+1}.

$$\frac{\left(2x+1\right)^{2}x}{\left(x+1\right)x^{3}}-\frac{\left(x-1\right)^{2}\left(x^{2}-2x+1\right)\left(x+1\right)}{\left(x+1\right)x^{3}}-\frac{2x+1}{x^{2}+x}$$

Since \frac{\left(2x+1\right)^{2}x}{\left(x+1\right)x^{3}} and \frac{\left(x-1\right)^{2}\left(x^{2}-2x+1\right)\left(x+1\right)}{\left(x+1\right)x^{3}} have the same denominator, subtract them by subtracting their numerators.

$$\frac{\left(2x+1\right)^{2}x-\left(x-1\right)^{2}\left(x^{2}-2x+1\right)\left(x+1\right)}{\left(x+1\right)x^{3}}-\frac{2x+1}{x^{2}+x}$$

Do the multiplications in \left(2x+1\right)^{2}x-\left(x-1\right)^{2}\left(x^{2}-2x+1\right)\left(x+1\right).

$$\frac{4x^{3}+4x^{2}+x-x^{5}+x^{4}+x^{3}-x^{2}+2x^{4}-2x^{3}-2x^{2}+2x-x^{3}+x^{2}+x-1}{\left(x+1\right)x^{3}}-\frac{2x+1}{x^{2}+x}$$

Combine like terms in 4x^{3}+4x^{2}+x-x^{5}+x^{4}+x^{3}-x^{2}+2x^{4}-2x^{3}-2x^{2}+2x-x^{3}+x^{2}+x-1.

$$\frac{2x^{3}+2x^{2}+4x-x^{5}+3x^{4}-1}{\left(x+1\right)x^{3}}-\frac{2x+1}{x^{2}+x}$$

Factor x^{2}+x.

$$\frac{2x^{3}+2x^{2}+4x-x^{5}+3x^{4}-1}{\left(x+1\right)x^{3}}-\frac{2x+1}{x\left(x+1\right)}$$

To add or subtract expressions, expand them to make their denominators the same. Least common multiple of \left(x+1\right)x^{3} and x\left(x+1\right) is \left(x+1\right)x^{3}. Multiply \frac{2x+1}{x\left(x+1\right)} times \frac{x^{2}}{x^{2}}.

$$\frac{2x^{3}+2x^{2}+4x-x^{5}+3x^{4}-1}{\left(x+1\right)x^{3}}-\frac{\left(2x+1\right)x^{2}}{\left(x+1\right)x^{3}}$$

Since \frac{2x^{3}+2x^{2}+4x-x^{5}+3x^{4}-1}{\left(x+1\right)x^{3}} and \frac{\left(2x+1\right)x^{2}}{\left(x+1\right)x^{3}} have the same denominator, subtract them by subtracting their numerators.

$$\frac{2x^{3}+2x^{2}+4x-x^{5}+3x^{4}-1-\left(2x+1\right)x^{2}}{\left(x+1\right)x^{3}}$$

Do the multiplications in 2x^{3}+2x^{2}+4x-x^{5}+3x^{4}-1-\left(2x+1\right)x^{2}.

$$\frac{2x^{3}+2x^{2}+4x-x^{5}+3x^{4}-1-2x^{3}-x^{2}}{\left(x+1\right)x^{3}}$$

Combine like terms in 2x^{3}+2x^{2}+4x-x^{5}+3x^{4}-1-2x^{3}-x^{2}.

$$\frac{x^{2}+4x-x^{5}+3x^{4}-1}{\left(x+1\right)x^{3}}$$

Factor the expressions that are not already factored in \frac{x^{2}+4x-x^{5}+3x^{4}-1}{\left(x+1\right)x^{3}}.

$$\frac{\left(x+1\right)\left(-x^{4}+4x^{3}-4x^{2}+5x-1\right)}{\left(x+1\right)x^{3}}$$

Cancel out x+1 in both numerator and denominator.

$$\frac{-x^{4}+4x^{3}-4x^{2}+5x-1}{x^{3}}$$

Expand

$$-x+4-\frac{4}{x}+\frac{5}{x^{2}}-\frac{1}{x^{3}}$$

Short Solution Steps

To add or subtract expressions, expand them to make their denominators the same. Multiply 2 times \frac{x}{x}.

$$\frac{\left(\frac{2x}{x}+\frac{1}{x}\right)^{2}}{1+x}-\left(1-\frac{1}{x}\right)^{2}\left(x+\frac{1}{x}-2\right)-\frac{2x+1}{x^{2}+x}$$

Since \frac{2x}{x} and \frac{1}{x} have the same denominator, add them by adding their numerators.

$$\frac{\left(\frac{2x+1}{x}\right)^{2}}{1+x}-\left(1-\frac{1}{x}\right)^{2}\left(x+\frac{1}{x}-2\right)-\frac{2x+1}{x^{2}+x}$$

To raise \frac{2x+1}{x} to a power, raise both numerator and denominator to the power and then divide.

$$\frac{\frac{\left(2x+1\right)^{2}}{x^{2}}}{1+x}-\left(1-\frac{1}{x}\right)^{2}\left(x+\frac{1}{x}-2\right)-\frac{2x+1}{x^{2}+x}$$

Express \frac{\frac{\left(2x+1\right)^{2}}{x^{2}}}{1+x} as a single fraction.

$$\frac{\left(2x+1\right)^{2}}{x^{2}\left(1+x\right)}-\left(1-\frac{1}{x}\right)^{2}\left(x+\frac{1}{x}-2\right)-\frac{2x+1}{x^{2}+x}$$

To add or subtract expressions, expand them to make their denominators the same. Multiply 1 times \frac{x}{x}.

$$\frac{\left(2x+1\right)^{2}}{x^{2}\left(1+x\right)}-\left(\frac{x}{x}-\frac{1}{x}\right)^{2}\left(x+\frac{1}{x}-2\right)-\frac{2x+1}{x^{2}+x}$$

Since \frac{x}{x} and \frac{1}{x} have the same denominator, subtract them by subtracting their numerators.

$$\frac{\left(2x+1\right)^{2}}{x^{2}\left(1+x\right)}-\left(\frac{x-1}{x}\right)^{2}\left(x+\frac{1}{x}-2\right)-\frac{2x+1}{x^{2}+x}$$

To raise \frac{x-1}{x} to a power, raise both numerator and denominator to the power and then divide.

$$\frac{\left(2x+1\right)^{2}}{x^{2}\left(1+x\right)}-\frac{\left(x-1\right)^{2}}{x^{2}}\left(x+\frac{1}{x}-2\right)-\frac{2x+1}{x^{2}+x}$$

To add or subtract expressions, expand them to make their denominators the same. Multiply x-2 times \frac{x}{x}.

$$\frac{\left(2x+1\right)^{2}}{x^{2}\left(1+x\right)}-\frac{\left(x-1\right)^{2}}{x^{2}}\left(\frac{\left(x-2\right)x}{x}+\frac{1}{x}\right)-\frac{2x+1}{x^{2}+x}$$

Since \frac{\left(x-2\right)x}{x} and \frac{1}{x} have the same denominator, add them by adding their numerators.

$$\frac{\left(2x+1\right)^{2}}{x^{2}\left(1+x\right)}-\frac{\left(x-1\right)^{2}}{x^{2}}\times \frac{\left(x-2\right)x+1}{x}-\frac{2x+1}{x^{2}+x}$$

Do the multiplications in \left(x-2\right)x+1.

$$\frac{\left(2x+1\right)^{2}}{x^{2}\left(1+x\right)}-\frac{\left(x-1\right)^{2}}{x^{2}}\times \frac{x^{2}-2x+1}{x}-\frac{2x+1}{x^{2}+x}$$

Multiply \frac{\left(x-1\right)^{2}}{x^{2}} times \frac{x^{2}-2x+1}{x} by multiplying numerator times numerator and denominator times denominator.

$$\frac{\left(2x+1\right)^{2}}{x^{2}\left(1+x\right)}-\frac{\left(x-1\right)^{2}\left(x^{2}-2x+1\right)}{x^{2}x}-\frac{2x+1}{x^{2}+x}$$

To multiply powers of the same base, add their exponents. Add 2 and 1 to get 3.

$$\frac{\left(2x+1\right)^{2}}{x^{2}\left(1+x\right)}-\frac{\left(x-1\right)^{2}\left(x^{2}-2x+1\right)}{x^{3}}-\frac{2x+1}{x^{2}+x}$$

To add or subtract expressions, expand them to make their denominators the same. Least common multiple of x^{2}\left(1+x\right) and x^{3} is \left(x+1\right)x^{3}. Multiply \frac{\left(2x+1\right)^{2}}{x^{2}\left(1+x\right)} times \frac{x}{x}. Multiply \frac{\left(x-1\right)^{2}\left(x^{2}-2x+1\right)}{x^{3}} times \frac{x+1}{x+1}.

$$\frac{\left(2x+1\right)^{2}x}{\left(x+1\right)x^{3}}-\frac{\left(x-1\right)^{2}\left(x^{2}-2x+1\right)\left(x+1\right)}{\left(x+1\right)x^{3}}-\frac{2x+1}{x^{2}+x}$$

Since \frac{\left(2x+1\right)^{2}x}{\left(x+1\right)x^{3}} and \frac{\left(x-1\right)^{2}\left(x^{2}-2x+1\right)\left(x+1\right)}{\left(x+1\right)x^{3}} have the same denominator, subtract them by subtracting their numerators.

$$\frac{\left(2x+1\right)^{2}x-\left(x-1\right)^{2}\left(x^{2}-2x+1\right)\left(x+1\right)}{\left(x+1\right)x^{3}}-\frac{2x+1}{x^{2}+x}$$

Do the multiplications in \left(2x+1\right)^{2}x-\left(x-1\right)^{2}\left(x^{2}-2x+1\right)\left(x+1\right).

$$\frac{4x^{3}+4x^{2}+x-x^{5}+x^{4}+x^{3}-x^{2}+2x^{4}-2x^{3}-2x^{2}+2x-x^{3}+x^{2}+x-1}{\left(x+1\right)x^{3}}-\frac{2x+1}{x^{2}+x}$$

Combine like terms in 4x^{3}+4x^{2}+x-x^{5}+x^{4}+x^{3}-x^{2}+2x^{4}-2x^{3}-2x^{2}+2x-x^{3}+x^{2}+x-1.

$$\frac{2x^{3}+2x^{2}+4x-x^{5}+3x^{4}-1}{\left(x+1\right)x^{3}}-\frac{2x+1}{x^{2}+x}$$

Factor x^{2}+x.

$$\frac{2x^{3}+2x^{2}+4x-x^{5}+3x^{4}-1}{\left(x+1\right)x^{3}}-\frac{2x+1}{x\left(x+1\right)}$$

To add or subtract expressions, expand them to make their denominators the same. Least common multiple of \left(x+1\right)x^{3} and x\left(x+1\right) is \left(x+1\right)x^{3}. Multiply \frac{2x+1}{x\left(x+1\right)} times \frac{x^{2}}{x^{2}}.

$$\frac{2x^{3}+2x^{2}+4x-x^{5}+3x^{4}-1}{\left(x+1\right)x^{3}}-\frac{\left(2x+1\right)x^{2}}{\left(x+1\right)x^{3}}$$

Since \frac{2x^{3}+2x^{2}+4x-x^{5}+3x^{4}-1}{\left(x+1\right)x^{3}} and \frac{\left(2x+1\right)x^{2}}{\left(x+1\right)x^{3}} have the same denominator, subtract them by subtracting their numerators.

$$\frac{2x^{3}+2x^{2}+4x-x^{5}+3x^{4}-1-\left(2x+1\right)x^{2}}{\left(x+1\right)x^{3}}$$

Do the multiplications in 2x^{3}+2x^{2}+4x-x^{5}+3x^{4}-1-\left(2x+1\right)x^{2}.

$$\frac{2x^{3}+2x^{2}+4x-x^{5}+3x^{4}-1-2x^{3}-x^{2}}{\left(x+1\right)x^{3}}$$

Combine like terms in 2x^{3}+2x^{2}+4x-x^{5}+3x^{4}-1-2x^{3}-x^{2}.

$$\frac{x^{2}+4x-x^{5}+3x^{4}-1}{\left(x+1\right)x^{3}}$$

Factor the expressions that are not already factored in \frac{x^{2}+4x-x^{5}+3x^{4}-1}{\left(x+1\right)x^{3}}.

$$\frac{\left(x+1\right)\left(-x^{4}+4x^{3}-4x^{2}+5x-1\right)}{\left(x+1\right)x^{3}}$$

Cancel out x+1 in both numerator and denominator.

$$\frac{-x^{4}+4x^{3}-4x^{2}+5x-1}{x^{3}}$$