Evaluate
12-5x-5x^{3}
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12-5x-5x^{3}
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-3x^{3}+2x^{2}-5x+6-2x^{3}+6-2x^{2}
To find the opposite of 2x^{3}-6+2x^{2}, find the opposite of each term.
-5x^{3}+2x^{2}-5x+6+6-2x^{2}
Combine -3x^{3} and -2x^{3} to get -5x^{3}.
-5x^{3}+2x^{2}-5x+12-2x^{2}
Add 6 and 6 to get 12.
-5x^{3}-5x+12
Combine 2x^{2} and -2x^{2} to get 0.
-3x^{3}+2x^{2}-5x+6-2x^{3}+6-2x^{2}
To find the opposite of 2x^{3}-6+2x^{2}, find the opposite of each term.
-5x^{3}+2x^{2}-5x+6+6-2x^{2}
Combine -3x^{3} and -2x^{3} to get -5x^{3}.
-5x^{3}+2x^{2}-5x+12-2x^{2}
Add 6 and 6 to get 12.
-5x^{3}-5x+12
Combine 2x^{2} and -2x^{2} to get 0.
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Limits
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