Evaluate
2x^{4}-x^{3}+8x^{2}-4
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2x^{4}-x^{3}+8x^{2}-4
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2x^{4}-x^{3}+9x^{2}-x^{2}-4
To find the opposite of x^{2}+4, find the opposite of each term.
2x^{4}-x^{3}+8x^{2}-4
Combine 9x^{2} and -x^{2} to get 8x^{2}.
2x^{4}-x^{3}+9x^{2}-x^{2}-4
To find the opposite of x^{2}+4, find the opposite of each term.
2x^{4}-x^{3}+8x^{2}-4
Combine 9x^{2} and -x^{2} to get 8x^{2}.
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