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