Evaluate
x\left(2x+1\right)
Expand
2x^{2}+x
Graph
Share
Copied to clipboard
\left(2+\frac{1}{x}\right)x^{2}
Divide 2+\frac{1}{x} by \frac{1}{x^{2}} by multiplying 2+\frac{1}{x} by the reciprocal of \frac{1}{x^{2}}.
\left(\frac{2x}{x}+\frac{1}{x}\right)x^{2}
To add or subtract expressions, expand them to make their denominators the same. Multiply 2 times \frac{x}{x}.
\frac{2x+1}{x}x^{2}
Since \frac{2x}{x} and \frac{1}{x} have the same denominator, add them by adding their numerators.
\frac{\left(2x+1\right)x^{2}}{x}
Express \frac{2x+1}{x}x^{2} as a single fraction.
x\left(2x+1\right)
Cancel out x in both numerator and denominator.
2x^{2}+x
Use the distributive property to multiply x by 2x+1.
\left(2+\frac{1}{x}\right)x^{2}
Divide 2+\frac{1}{x} by \frac{1}{x^{2}} by multiplying 2+\frac{1}{x} by the reciprocal of \frac{1}{x^{2}}.
\left(\frac{2x}{x}+\frac{1}{x}\right)x^{2}
To add or subtract expressions, expand them to make their denominators the same. Multiply 2 times \frac{x}{x}.
\frac{2x+1}{x}x^{2}
Since \frac{2x}{x} and \frac{1}{x} have the same denominator, add them by adding their numerators.
\frac{\left(2x+1\right)x^{2}}{x}
Express \frac{2x+1}{x}x^{2} as a single fraction.
x\left(2x+1\right)
Cancel out x in both numerator and denominator.
2x^{2}+x
Use the distributive property to multiply x by 2x+1.
Examples
Quadratic equation
{ x } ^ { 2 } - 4 x - 5 = 0
Trigonometry
4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
Arithmetic
699 * 533
Matrix
\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
Simultaneous equation
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}