Question: a. Find the first three terms when (1 2x) 5 is expanded, in ascending powers of x. b. In the expansion of (3 +

a. Find the first three terms when (1 − 2x)⁵ is expanded, in ascending powers of x.
b. In the expansion of (3 + ax)(1 − 2x)⁵, the coefficient of x² is zero.
Find the value of a.

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a To expand 1 2x5 we can use the binomial theorem which states that 1 2x C5012x C5112x C... View full answer

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