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3x^{2}-x+13
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3x^{2}-x+13
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4x^{2}-3x+5-x^{2}+2x+8
To find the opposite of x^{2}-2x-8, find the opposite of each term.
3x^{2}-3x+5+2x+8
Combine 4x^{2} and -x^{2} to get 3x^{2}.
3x^{2}-x+5+8
Combine -3x and 2x to get -x.
3x^{2}-x+13
Add 5 and 8 to get 13.
4x^{2}-3x+5-x^{2}+2x+8
To find the opposite of x^{2}-2x-8, find the opposite of each term.
3x^{2}-3x+5+2x+8
Combine 4x^{2} and -x^{2} to get 3x^{2}.
3x^{2}-x+5+8
Combine -3x and 2x to get -x.
3x^{2}-x+13
Add 5 and 8 to get 13.
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