Evaluate
-x^{3}+3x^{2}+9x-4
Expand
-x^{3}+3x^{2}+9x-4
Graph
Share
Copied to clipboard
6x^{3}-4x^{2}+2x-2-7x^{3}+7x^{2}+7x-2
To find the opposite of 7x^{3}-7x^{2}-7x+2, find the opposite of each term.
-x^{3}-4x^{2}+2x-2+7x^{2}+7x-2
Combine 6x^{3} and -7x^{3} to get -x^{3}.
-x^{3}+3x^{2}+2x-2+7x-2
Combine -4x^{2} and 7x^{2} to get 3x^{2}.
-x^{3}+3x^{2}+9x-2-2
Combine 2x and 7x to get 9x.
-x^{3}+3x^{2}+9x-4
Subtract 2 from -2 to get -4.
6x^{3}-4x^{2}+2x-2-7x^{3}+7x^{2}+7x-2
To find the opposite of 7x^{3}-7x^{2}-7x+2, find the opposite of each term.
-x^{3}-4x^{2}+2x-2+7x^{2}+7x-2
Combine 6x^{3} and -7x^{3} to get -x^{3}.
-x^{3}+3x^{2}+2x-2+7x-2
Combine -4x^{2} and 7x^{2} to get 3x^{2}.
-x^{3}+3x^{2}+9x-2-2
Combine 2x and 7x to get 9x.
-x^{3}+3x^{2}+9x-4
Subtract 2 from -2 to get -4.
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}