Expand
a^{2}+7ab+12b^{2}
Evaluate
\left(a+3b\right)\left(a+4b\right)
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a^{2}+4ab+3ba+12b^{2}
Apply the distributive property by multiplying each term of a+3b by each term of a+4b.
a^{2}+7ab+12b^{2}
Combine 4ab and 3ba to get 7ab.
a^{2}+4ab+3ba+12b^{2}
Apply the distributive property by multiplying each term of a+3b by each term of a+4b.
a^{2}+7ab+12b^{2}
Combine 4ab and 3ba to get 7ab.
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