Evaluate
25-6x-8x^{2}+5x^{3}-3x^{4}
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25-6x-8x^{2}+5x^{3}-3x^{4}
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6x^{3}-8x^{2}-10x+16-3x^{4}-x^{3}+4x+9
Use the distributive property to multiply 2 by 3x^{3}-4x^{2}-5x+8.
5x^{3}-8x^{2}-10x+16-3x^{4}+4x+9
Combine 6x^{3} and -x^{3} to get 5x^{3}.
5x^{3}-8x^{2}-6x+16-3x^{4}+9
Combine -10x and 4x to get -6x.
5x^{3}-8x^{2}-6x+25-3x^{4}
Add 16 and 9 to get 25.
6x^{3}-8x^{2}-10x+16-3x^{4}-x^{3}+4x+9
Use the distributive property to multiply 2 by 3x^{3}-4x^{2}-5x+8.
5x^{3}-8x^{2}-10x+16-3x^{4}+4x+9
Combine 6x^{3} and -x^{3} to get 5x^{3}.
5x^{3}-8x^{2}-6x+16-3x^{4}+9
Combine -10x and 4x to get -6x.
5x^{3}-8x^{2}-6x+25-3x^{4}
Add 16 and 9 to get 25.
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