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