Evaluate
-\frac{8x^{2}}{x-1}
Expand
-\frac{8x^{2}}{x-1}
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\frac{\left(x-9\right)\left(x-8\right)}{-x+9}\times \frac{8x^{2}}{x^{2}-9x+8}
Factor the expressions that are not already factored in \frac{x^{2}-17x+72}{9-x}.
\frac{-\left(x-8\right)\left(-x+9\right)}{-x+9}\times \frac{8x^{2}}{x^{2}-9x+8}
Extract the negative sign in -9+x.
-\left(x-8\right)\times \frac{8x^{2}}{x^{2}-9x+8}
Cancel out -x+9 in both numerator and denominator.
\left(-x+8\right)\times \frac{8x^{2}}{x^{2}-9x+8}
Expand the expression.
\frac{\left(-x+8\right)\times 8x^{2}}{x^{2}-9x+8}
Express \left(-x+8\right)\times \frac{8x^{2}}{x^{2}-9x+8} as a single fraction.
\frac{8\left(-x+8\right)x^{2}}{\left(x-8\right)\left(x-1\right)}
Factor the expressions that are not already factored.
\frac{-8\left(x-8\right)x^{2}}{\left(x-8\right)\left(x-1\right)}
Extract the negative sign in 8-x.
\frac{-8x^{2}}{x-1}
Cancel out x-8 in both numerator and denominator.
\frac{\left(x-9\right)\left(x-8\right)}{-x+9}\times \frac{8x^{2}}{x^{2}-9x+8}
Factor the expressions that are not already factored in \frac{x^{2}-17x+72}{9-x}.
\frac{-\left(x-8\right)\left(-x+9\right)}{-x+9}\times \frac{8x^{2}}{x^{2}-9x+8}
Extract the negative sign in -9+x.
-\left(x-8\right)\times \frac{8x^{2}}{x^{2}-9x+8}
Cancel out -x+9 in both numerator and denominator.
\left(-x+8\right)\times \frac{8x^{2}}{x^{2}-9x+8}
Expand the expression.
\frac{\left(-x+8\right)\times 8x^{2}}{x^{2}-9x+8}
Express \left(-x+8\right)\times \frac{8x^{2}}{x^{2}-9x+8} as a single fraction.
\frac{8\left(-x+8\right)x^{2}}{\left(x-8\right)\left(x-1\right)}
Factor the expressions that are not already factored.
\frac{-8\left(x-8\right)x^{2}}{\left(x-8\right)\left(x-1\right)}
Extract the negative sign in 8-x.
\frac{-8x^{2}}{x-1}
Cancel out x-8 in both numerator and denominator.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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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}