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