Evaluate
3x^{2}-12x^{4}
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3x^{2}-12x^{4}
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3x^{4}-4x^{2}-15x^{4}+7x^{2}
To find the opposite of 15x^{4}-7x^{2}, find the opposite of each term.
-12x^{4}-4x^{2}+7x^{2}
Combine 3x^{4} and -15x^{4} to get -12x^{4}.
-12x^{4}+3x^{2}
Combine -4x^{2} and 7x^{2} to get 3x^{2}.
3x^{4}-4x^{2}-15x^{4}+7x^{2}
To find the opposite of 15x^{4}-7x^{2}, find the opposite of each term.
-12x^{4}-4x^{2}+7x^{2}
Combine 3x^{4} and -15x^{4} to get -12x^{4}.
-12x^{4}+3x^{2}
Combine -4x^{2} and 7x^{2} to get 3x^{2}.
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