Evaluate
\left(a-3b\right)\left(2a+b\right)
Expand
2a^{2}-5ab-3b^{2}
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2a^{2}-6ab+ba-3b^{2}
Apply the distributive property by multiplying each term of 2a+b by each term of a-3b.
2a^{2}-5ab-3b^{2}
Combine -6ab and ba to get -5ab.
2a^{2}-6ab+ba-3b^{2}
Apply the distributive property by multiplying each term of 2a+b by each term of a-3b.
2a^{2}-5ab-3b^{2}
Combine -6ab and ba to get -5ab.
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