Evaluate
x\left(-4x^{3}-7x^{2}+13x-3\right)
Expand
-4x^{4}-7x^{3}+13x^{2}-3x
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7x^{4}-3x+13x^{2}-3x^{4}-\left(7x^{3}+8x^{4}\right)
Combine 7x^{2} and 6x^{2} to get 13x^{2}.
4x^{4}-3x+13x^{2}-\left(7x^{3}+8x^{4}\right)
Combine 7x^{4} and -3x^{4} to get 4x^{4}.
4x^{4}-3x+13x^{2}-7x^{3}-8x^{4}
To find the opposite of 7x^{3}+8x^{4}, find the opposite of each term.
-4x^{4}-3x+13x^{2}-7x^{3}
Combine 4x^{4} and -8x^{4} to get -4x^{4}.
7x^{4}-3x+13x^{2}-3x^{4}-\left(7x^{3}+8x^{4}\right)
Combine 7x^{2} and 6x^{2} to get 13x^{2}.
4x^{4}-3x+13x^{2}-\left(7x^{3}+8x^{4}\right)
Combine 7x^{4} and -3x^{4} to get 4x^{4}.
4x^{4}-3x+13x^{2}-7x^{3}-8x^{4}
To find the opposite of 7x^{3}+8x^{4}, find the opposite of each term.
-4x^{4}-3x+13x^{2}-7x^{3}
Combine 4x^{4} and -8x^{4} to get -4x^{4}.
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