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4x^{2}-2x-3
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4x^{2}-2x-3
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3x^{2}-\left(2x-3x^{2}+3+2x^{2}\right)
Use the distributive property to multiply -3 by x^{2}-1.
3x^{2}-\left(2x-x^{2}+3\right)
Combine -3x^{2} and 2x^{2} to get -x^{2}.
3x^{2}-2x+x^{2}-3
To find the opposite of 2x-x^{2}+3, find the opposite of each term.
4x^{2}-2x-3
Combine 3x^{2} and x^{2} to get 4x^{2}.
3x^{2}-\left(2x-3x^{2}+3+2x^{2}\right)
Use the distributive property to multiply -3 by x^{2}-1.
3x^{2}-\left(2x-x^{2}+3\right)
Combine -3x^{2} and 2x^{2} to get -x^{2}.
3x^{2}-2x+x^{2}-3
To find the opposite of 2x-x^{2}+3, find the opposite of each term.
4x^{2}-2x-3
Combine 3x^{2} and x^{2} to get 4x^{2}.
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