Expand
9a^{2}+3ab-2b^{2}
Evaluate
\left(3a-b\right)\left(3a+2b\right)
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9a^{2}+6ab-3ba-2b^{2}
Apply the distributive property by multiplying each term of 3a-b by each term of 3a+2b.
9a^{2}+3ab-2b^{2}
Combine 6ab and -3ba to get 3ab.
9a^{2}+6ab-3ba-2b^{2}
Apply the distributive property by multiplying each term of 3a-b by each term of 3a+2b.
9a^{2}+3ab-2b^{2}
Combine 6ab and -3ba to get 3ab.
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