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