Evaluate
b\left(a+2b\right)
Expand
ab+2b^{2}
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2a^{2}-ab+b^{2}-2a^{2}+2ab+b^{2}
To find the opposite of 2a^{2}-2ab-b^{2}, find the opposite of each term.
-ab+b^{2}+2ab+b^{2}
Combine 2a^{2} and -2a^{2} to get 0.
ab+b^{2}+b^{2}
Combine -ab and 2ab to get ab.
ab+2b^{2}
Combine b^{2} and b^{2} to get 2b^{2}.
2a^{2}-ab+b^{2}-2a^{2}+2ab+b^{2}
To find the opposite of 2a^{2}-2ab-b^{2}, find the opposite of each term.
-ab+b^{2}+2ab+b^{2}
Combine 2a^{2} and -2a^{2} to get 0.
ab+b^{2}+b^{2}
Combine -ab and 2ab to get ab.
ab+2b^{2}
Combine b^{2} and b^{2} to get 2b^{2}.
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Limits
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