Evaluate
2x\left(x+5\right)
Expand
2x^{2}+10x
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11x^{2}+2x-3-4x^{2}+7x-5-5x^{2}+x+8
To find the opposite of 4x^{2}-7x+5, find the opposite of each term.
7x^{2}+2x-3+7x-5-5x^{2}+x+8
Combine 11x^{2} and -4x^{2} to get 7x^{2}.
7x^{2}+9x-3-5-5x^{2}+x+8
Combine 2x and 7x to get 9x.
7x^{2}+9x-8-5x^{2}+x+8
Subtract 5 from -3 to get -8.
2x^{2}+9x-8+x+8
Combine 7x^{2} and -5x^{2} to get 2x^{2}.
2x^{2}+10x-8+8
Combine 9x and x to get 10x.
2x^{2}+10x
Add -8 and 8 to get 0.
11x^{2}+2x-3-4x^{2}+7x-5-5x^{2}+x+8
To find the opposite of 4x^{2}-7x+5, find the opposite of each term.
7x^{2}+2x-3+7x-5-5x^{2}+x+8
Combine 11x^{2} and -4x^{2} to get 7x^{2}.
7x^{2}+9x-3-5-5x^{2}+x+8
Combine 2x and 7x to get 9x.
7x^{2}+9x-8-5x^{2}+x+8
Subtract 5 from -3 to get -8.
2x^{2}+9x-8+x+8
Combine 7x^{2} and -5x^{2} to get 2x^{2}.
2x^{2}+10x-8+8
Combine 9x and x to get 10x.
2x^{2}+10x
Add -8 and 8 to get 0.
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}