Evaluate
7-x-3x^{2}-6x^{3}
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7-x-3x^{2}-6x^{3}
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6-8x^{3}-x+3+2x^{3}+x^{2}-\left(4x^{2}+3-1\right)
To find the opposite of 8x^{3}+x-3, find the opposite of each term.
9-8x^{3}-x+2x^{3}+x^{2}-\left(4x^{2}+3-1\right)
Add 6 and 3 to get 9.
9-6x^{3}-x+x^{2}-\left(4x^{2}+3-1\right)
Combine -8x^{3} and 2x^{3} to get -6x^{3}.
9-6x^{3}-x+x^{2}-\left(4x^{2}+2\right)
Subtract 1 from 3 to get 2.
9-6x^{3}-x+x^{2}-4x^{2}-2
To find the opposite of 4x^{2}+2, find the opposite of each term.
9-6x^{3}-x-3x^{2}-2
Combine x^{2} and -4x^{2} to get -3x^{2}.
7-6x^{3}-x-3x^{2}
Subtract 2 from 9 to get 7.
6-8x^{3}-x+3+2x^{3}+x^{2}-\left(4x^{2}+3-1\right)
To find the opposite of 8x^{3}+x-3, find the opposite of each term.
9-8x^{3}-x+2x^{3}+x^{2}-\left(4x^{2}+3-1\right)
Add 6 and 3 to get 9.
9-6x^{3}-x+x^{2}-\left(4x^{2}+3-1\right)
Combine -8x^{3} and 2x^{3} to get -6x^{3}.
9-6x^{3}-x+x^{2}-\left(4x^{2}+2\right)
Subtract 1 from 3 to get 2.
9-6x^{3}-x+x^{2}-4x^{2}-2
To find the opposite of 4x^{2}+2, find the opposite of each term.
9-6x^{3}-x-3x^{2}-2
Combine x^{2} and -4x^{2} to get -3x^{2}.
7-6x^{3}-x-3x^{2}
Subtract 2 from 9 to get 7.
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}