Evaluate
11x^{4}-9x^{3}+13x^{2}-x+9
Expand
11x^{4}-9x^{3}+13x^{2}-x+9
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5x^{4}+13x^{2}-x+16+6x^{4}-9x^{3}-7
To find the opposite of -6x^{4}+9x^{3}+7, find the opposite of each term.
11x^{4}+13x^{2}-x+16-9x^{3}-7
Combine 5x^{4} and 6x^{4} to get 11x^{4}.
11x^{4}+13x^{2}-x+9-9x^{3}
Subtract 7 from 16 to get 9.
5x^{4}+13x^{2}-x+16+6x^{4}-9x^{3}-7
To find the opposite of -6x^{4}+9x^{3}+7, find the opposite of each term.
11x^{4}+13x^{2}-x+16-9x^{3}-7
Combine 5x^{4} and 6x^{4} to get 11x^{4}.
11x^{4}+13x^{2}-x+9-9x^{3}
Subtract 7 from 16 to get 9.
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