What is the coefficient of xy^2 in the expansion of (x-2y)^3 – InterviewSolution

1.

What is the coefficient of xy^2 in the expansion of (x-2y)^3

Answer»

Answer:

24

Step-by-step explanation:

(x - 2Y)³

Using :: (a - B)³ = a³ - b³ - 3ab(a - b)

(x - 2y)³ = x³ - 8y³ - 24xy(x - y)

= x³ - 8y³ - 24x²y + 24xy²

you have ASKED the coefficient of xy²

So it is 24

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