Evaluate
\frac{4x^{2}+x-23}{\left(x-2\right)\left(x+3\right)}
Expand
\frac{4x^{2}+x-23}{\left(x-2\right)\left(x+3\right)}
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\frac{3\left(x-2\right)}{x-2}-\frac{1}{x-2}+\frac{x+1}{x+3}
To add or subtract expressions, expand them to make their denominators the same. Multiply 3 times \frac{x-2}{x-2}.
\frac{3\left(x-2\right)-1}{x-2}+\frac{x+1}{x+3}
Since \frac{3\left(x-2\right)}{x-2} and \frac{1}{x-2} have the same denominator, subtract them by subtracting their numerators.
\frac{3x-6-1}{x-2}+\frac{x+1}{x+3}
Do the multiplications in 3\left(x-2\right)-1.
\frac{3x-7}{x-2}+\frac{x+1}{x+3}
Combine like terms in 3x-6-1.
\frac{\left(3x-7\right)\left(x+3\right)}{\left(x-2\right)\left(x+3\right)}+\frac{\left(x+1\right)\left(x-2\right)}{\left(x-2\right)\left(x+3\right)}
To add or subtract expressions, expand them to make their denominators the same. Least common multiple of x-2 and x+3 is \left(x-2\right)\left(x+3\right). Multiply \frac{3x-7}{x-2} times \frac{x+3}{x+3}. Multiply \frac{x+1}{x+3} times \frac{x-2}{x-2}.
\frac{\left(3x-7\right)\left(x+3\right)+\left(x+1\right)\left(x-2\right)}{\left(x-2\right)\left(x+3\right)}
Since \frac{\left(3x-7\right)\left(x+3\right)}{\left(x-2\right)\left(x+3\right)} and \frac{\left(x+1\right)\left(x-2\right)}{\left(x-2\right)\left(x+3\right)} have the same denominator, add them by adding their numerators.
\frac{3x^{2}+9x-7x-21+x^{2}-2x+x-2}{\left(x-2\right)\left(x+3\right)}
Do the multiplications in \left(3x-7\right)\left(x+3\right)+\left(x+1\right)\left(x-2\right).
\frac{4x^{2}+x-23}{\left(x-2\right)\left(x+3\right)}
Combine like terms in 3x^{2}+9x-7x-21+x^{2}-2x+x-2.
\frac{4x^{2}+x-23}{x^{2}+x-6}
Expand \left(x-2\right)\left(x+3\right).
\frac{3\left(x-2\right)}{x-2}-\frac{1}{x-2}+\frac{x+1}{x+3}
To add or subtract expressions, expand them to make their denominators the same. Multiply 3 times \frac{x-2}{x-2}.
\frac{3\left(x-2\right)-1}{x-2}+\frac{x+1}{x+3}
Since \frac{3\left(x-2\right)}{x-2} and \frac{1}{x-2} have the same denominator, subtract them by subtracting their numerators.
\frac{3x-6-1}{x-2}+\frac{x+1}{x+3}
Do the multiplications in 3\left(x-2\right)-1.
\frac{3x-7}{x-2}+\frac{x+1}{x+3}
Combine like terms in 3x-6-1.
\frac{\left(3x-7\right)\left(x+3\right)}{\left(x-2\right)\left(x+3\right)}+\frac{\left(x+1\right)\left(x-2\right)}{\left(x-2\right)\left(x+3\right)}
To add or subtract expressions, expand them to make their denominators the same. Least common multiple of x-2 and x+3 is \left(x-2\right)\left(x+3\right). Multiply \frac{3x-7}{x-2} times \frac{x+3}{x+3}. Multiply \frac{x+1}{x+3} times \frac{x-2}{x-2}.
\frac{\left(3x-7\right)\left(x+3\right)+\left(x+1\right)\left(x-2\right)}{\left(x-2\right)\left(x+3\right)}
Since \frac{\left(3x-7\right)\left(x+3\right)}{\left(x-2\right)\left(x+3\right)} and \frac{\left(x+1\right)\left(x-2\right)}{\left(x-2\right)\left(x+3\right)} have the same denominator, add them by adding their numerators.
\frac{3x^{2}+9x-7x-21+x^{2}-2x+x-2}{\left(x-2\right)\left(x+3\right)}
Do the multiplications in \left(3x-7\right)\left(x+3\right)+\left(x+1\right)\left(x-2\right).
\frac{4x^{2}+x-23}{\left(x-2\right)\left(x+3\right)}
Combine like terms in 3x^{2}+9x-7x-21+x^{2}-2x+x-2.
\frac{4x^{2}+x-23}{x^{2}+x-6}
Expand \left(x-2\right)\left(x+3\right).
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}