Question

Q. (a+2b)^4-1

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Answer 1

Answer:

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Step-by-step explanation:

$(a +2b)^{4 - 1} \\ = (a + 2b)^{3} \\ formula = \\ (a + b)^{3} = {a}^{3} + {b}^{3} + 3a^{2}b + 3a {b}^{2} \\ {a}^{3} + (2b)^{3} + 3 \times {a}^{2} \times 2b + 3a \times ( 2b)^{2} \\ a^{3} + 8b^{3} + 6a ^{2}b + 12ab^{2}$