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Expand and simplify the following expression: (a-2b){3}
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1 vote
Expand and simplify the following expression:
(a-2b){3}

User Marcel Overdijk
by
7.8k points

1 Answer

1 vote

(x-y)^3=x^3-3x^2y+3xy^2-y^3\\--------------------------\\(a-2b)^3=a^3-3a^2\cdot2b+3a\cdot(2b)^2-(2b)^3\\\\=a^3-6a^2b+12ab^2-8b^3
User Automaton
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