Evaluate
-2x\left(x+1\right)
Expand
-2x^{2}-2x
Graph
Quiz
Polynomial
5 problems similar to:
\frac { 2 x ^ { 2 } } { 1 - x } \cdot \frac { x ^ { 2 } - 1 } { x }
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\frac{2x^{2}\left(x^{2}-1\right)}{\left(1-x\right)x}
Multiply \frac{2x^{2}}{1-x} times \frac{x^{2}-1}{x} by multiplying numerator times numerator and denominator times denominator.
\frac{2x\left(x^{2}-1\right)}{-x+1}
Cancel out x in both numerator and denominator.
\frac{2x\left(x-1\right)\left(x+1\right)}{-x+1}
Factor the expressions that are not already factored.
\frac{-2x\left(x+1\right)\left(-x+1\right)}{-x+1}
Extract the negative sign in -1+x.
-2x\left(x+1\right)
Cancel out -x+1 in both numerator and denominator.
-2x^{2}-2x
Expand the expression.
\frac{2x^{2}\left(x^{2}-1\right)}{\left(1-x\right)x}
Multiply \frac{2x^{2}}{1-x} times \frac{x^{2}-1}{x} by multiplying numerator times numerator and denominator times denominator.
\frac{2x\left(x^{2}-1\right)}{-x+1}
Cancel out x in both numerator and denominator.
\frac{2x\left(x-1\right)\left(x+1\right)}{-x+1}
Factor the expressions that are not already factored.
\frac{-2x\left(x+1\right)\left(-x+1\right)}{-x+1}
Extract the negative sign in -1+x.
-2x\left(x+1\right)
Cancel out -x+1 in both numerator and denominator.
-2x^{2}-2x
Expand the expression.
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}