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9x^{2}-11x+1
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9x^{2}-11x+1
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8x^{2}-2x+9-\left(-x^{2}\right)-9x-8
To find the opposite of -x^{2}+9x+8, find the opposite of each term.
8x^{2}-11x+9-\left(-x^{2}\right)-8
Combine -2x and -9x to get -11x.
8x^{2}-11x+1-\left(-x^{2}\right)
Subtract 8 from 9 to get 1.
8x^{2}-11x+1+x^{2}
Multiply -1 and -1 to get 1.
9x^{2}-11x+1
Combine 8x^{2} and x^{2} to get 9x^{2}.
8x^{2}-2x+9-\left(-x^{2}\right)-9x-8
To find the opposite of -x^{2}+9x+8, find the opposite of each term.
8x^{2}-11x+9-\left(-x^{2}\right)-8
Combine -2x and -9x to get -11x.
8x^{2}-11x+1-\left(-x^{2}\right)
Subtract 8 from 9 to get 1.
8x^{2}-11x+1+x^{2}
Multiply -1 and -1 to get 1.
9x^{2}-11x+1
Combine 8x^{2} and x^{2} to get 9x^{2}.
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