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15x^{2}+8x-5
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15x^{2}+8x-5
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5x^{2}-3x-5-\left(-x^{2}\right)+2x+7+9x^{2}+9x-7
To find the opposite of -x^{2}-2x-7, find the opposite of each term.
5x^{2}-x-5-\left(-x^{2}\right)+7+9x^{2}+9x-7
Combine -3x and 2x to get -x.
5x^{2}-x+2-\left(-x^{2}\right)+9x^{2}+9x-7
Add -5 and 7 to get 2.
14x^{2}-x+2-\left(-x^{2}\right)+9x-7
Combine 5x^{2} and 9x^{2} to get 14x^{2}.
14x^{2}+8x+2-\left(-x^{2}\right)-7
Combine -x and 9x to get 8x.
14x^{2}+8x-5-\left(-x^{2}\right)
Subtract 7 from 2 to get -5.
14x^{2}+8x-5+x^{2}
Multiply -1 and -1 to get 1.
15x^{2}+8x-5
Combine 14x^{2} and x^{2} to get 15x^{2}.
5x^{2}-3x-5-\left(-x^{2}\right)+2x+7+9x^{2}+9x-7
To find the opposite of -x^{2}-2x-7, find the opposite of each term.
5x^{2}-x-5-\left(-x^{2}\right)+7+9x^{2}+9x-7
Combine -3x and 2x to get -x.
5x^{2}-x+2-\left(-x^{2}\right)+9x^{2}+9x-7
Add -5 and 7 to get 2.
14x^{2}-x+2-\left(-x^{2}\right)+9x-7
Combine 5x^{2} and 9x^{2} to get 14x^{2}.
14x^{2}+8x+2-\left(-x^{2}\right)-7
Combine -x and 9x to get 8x.
14x^{2}+8x-5-\left(-x^{2}\right)
Subtract 7 from 2 to get -5.
14x^{2}+8x-5+x^{2}
Multiply -1 and -1 to get 1.
15x^{2}+8x-5
Combine 14x^{2} and x^{2} to get 15x^{2}.
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Simultaneous equation
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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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