Evaluate
3+4x^{4}-7x^{7}-2x^{8}-3x^{9}
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3+4x^{4}-7x^{7}-2x^{8}-3x^{9}
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4x^{4}+2x^{8}-3x^{7}+2-3x^{9}-4x^{8}-4x^{7}+1
To find the opposite of 3x^{9}+4x^{8}+4x^{7}-1, find the opposite of each term.
4x^{4}-2x^{8}-3x^{7}+2-3x^{9}-4x^{7}+1
Combine 2x^{8} and -4x^{8} to get -2x^{8}.
4x^{4}-2x^{8}-7x^{7}+2-3x^{9}+1
Combine -3x^{7} and -4x^{7} to get -7x^{7}.
4x^{4}-2x^{8}-7x^{7}+3-3x^{9}
Add 2 and 1 to get 3.
4x^{4}+2x^{8}-3x^{7}+2-3x^{9}-4x^{8}-4x^{7}+1
To find the opposite of 3x^{9}+4x^{8}+4x^{7}-1, find the opposite of each term.
4x^{4}-2x^{8}-3x^{7}+2-3x^{9}-4x^{7}+1
Combine 2x^{8} and -4x^{8} to get -2x^{8}.
4x^{4}-2x^{8}-7x^{7}+2-3x^{9}+1
Combine -3x^{7} and -4x^{7} to get -7x^{7}.
4x^{4}-2x^{8}-7x^{7}+3-3x^{9}
Add 2 and 1 to get 3.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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y = 3x + 4
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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}