Evaluate
5\left(x^{2}+2x+2\right)
Expand
5x^{2}+10x+10
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7x^{2}-3x+3-2x^{2}+13x+7
To find the opposite of 2x^{2}-13x-7, find the opposite of each term.
5x^{2}-3x+3+13x+7
Combine 7x^{2} and -2x^{2} to get 5x^{2}.
5x^{2}+10x+3+7
Combine -3x and 13x to get 10x.
5x^{2}+10x+10
Add 3 and 7 to get 10.
7x^{2}-3x+3-2x^{2}+13x+7
To find the opposite of 2x^{2}-13x-7, find the opposite of each term.
5x^{2}-3x+3+13x+7
Combine 7x^{2} and -2x^{2} to get 5x^{2}.
5x^{2}+10x+3+7
Combine -3x and 13x to get 10x.
5x^{2}+10x+10
Add 3 and 7 to get 10.
Examples
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y = 3x + 4
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Matrix
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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
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