Evaluate
\left(a-2b\right)\left(a-4b\right)
Expand
a^{2}-6ab+8b^{2}
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a^{2}-4ab-2ba+8b^{2}
Apply the distributive property by multiplying each term of a-2b by each term of a-4b.
a^{2}-6ab+8b^{2}
Combine -4ab and -2ba to get -6ab.
a^{2}-4ab-2ba+8b^{2}
Apply the distributive property by multiplying each term of a-2b by each term of a-4b.
a^{2}-6ab+8b^{2}
Combine -4ab and -2ba to get -6ab.
Examples
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