Evaluate
-6x^{2}-20x-6
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-6x^{2}-20x-6
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x^{2}-9-\left(7x^{2}+20x-3\right)
Use the distributive property to multiply x+3 by 7x-1 and combine like terms.
x^{2}-9-7x^{2}-20x+3
To find the opposite of 7x^{2}+20x-3, find the opposite of each term.
-6x^{2}-9-20x+3
Combine x^{2} and -7x^{2} to get -6x^{2}.
-6x^{2}-6-20x
Add -9 and 3 to get -6.
x^{2}-9-\left(7x^{2}+20x-3\right)
Use the distributive property to multiply x+3 by 7x-1 and combine like terms.
x^{2}-9-7x^{2}-20x+3
To find the opposite of 7x^{2}+20x-3, find the opposite of each term.
-6x^{2}-9-20x+3
Combine x^{2} and -7x^{2} to get -6x^{2}.
-6x^{2}-6-20x
Add -9 and 3 to get -6.
Examples
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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
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