Evaluate
5-8x-5x^{2}
Expand
5-8x-5x^{2}
Graph
Share
Copied to clipboard
4x^{2}-7x+3-x^{2}+5x-9-\left(8x^{2}+6x-11\right)
To find the opposite of x^{2}-5x+9, find the opposite of each term.
3x^{2}-7x+3+5x-9-\left(8x^{2}+6x-11\right)
Combine 4x^{2} and -x^{2} to get 3x^{2}.
3x^{2}-2x+3-9-\left(8x^{2}+6x-11\right)
Combine -7x and 5x to get -2x.
3x^{2}-2x-6-\left(8x^{2}+6x-11\right)
Subtract 9 from 3 to get -6.
3x^{2}-2x-6-8x^{2}-6x+11
To find the opposite of 8x^{2}+6x-11, find the opposite of each term.
-5x^{2}-2x-6-6x+11
Combine 3x^{2} and -8x^{2} to get -5x^{2}.
-5x^{2}-8x-6+11
Combine -2x and -6x to get -8x.
-5x^{2}-8x+5
Add -6 and 11 to get 5.
4x^{2}-7x+3-x^{2}+5x-9-\left(8x^{2}+6x-11\right)
To find the opposite of x^{2}-5x+9, find the opposite of each term.
3x^{2}-7x+3+5x-9-\left(8x^{2}+6x-11\right)
Combine 4x^{2} and -x^{2} to get 3x^{2}.
3x^{2}-2x+3-9-\left(8x^{2}+6x-11\right)
Combine -7x and 5x to get -2x.
3x^{2}-2x-6-\left(8x^{2}+6x-11\right)
Subtract 9 from 3 to get -6.
3x^{2}-2x-6-8x^{2}-6x+11
To find the opposite of 8x^{2}+6x-11, find the opposite of each term.
-5x^{2}-2x-6-6x+11
Combine 3x^{2} and -8x^{2} to get -5x^{2}.
-5x^{2}-8x-6+11
Combine -2x and -6x to get -8x.
-5x^{2}-8x+5
Add -6 and 11 to get 5.
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}