Evaluate
4x^{3}+7x^{2}+4x-20
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4x^{3}+7x^{2}+4x-20
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-3x^{3}+2x^{2}-x-9+7x^{3}+5x^{2}+5x-11
To find the opposite of -7x^{3}-5x^{2}-5x+11, find the opposite of each term.
4x^{3}+2x^{2}-x-9+5x^{2}+5x-11
Combine -3x^{3} and 7x^{3} to get 4x^{3}.
4x^{3}+7x^{2}-x-9+5x-11
Combine 2x^{2} and 5x^{2} to get 7x^{2}.
4x^{3}+7x^{2}+4x-9-11
Combine -x and 5x to get 4x.
4x^{3}+7x^{2}+4x-20
Subtract 11 from -9 to get -20.
-3x^{3}+2x^{2}-x-9+7x^{3}+5x^{2}+5x-11
To find the opposite of -7x^{3}-5x^{2}-5x+11, find the opposite of each term.
4x^{3}+2x^{2}-x-9+5x^{2}+5x-11
Combine -3x^{3} and 7x^{3} to get 4x^{3}.
4x^{3}+7x^{2}-x-9+5x-11
Combine 2x^{2} and 5x^{2} to get 7x^{2}.
4x^{3}+7x^{2}+4x-9-11
Combine -x and 5x to get 4x.
4x^{3}+7x^{2}+4x-20
Subtract 11 from -9 to get -20.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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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
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}