AM-1322

Binomial expansion

A Math · Secondary 4 · Medium · Binomial expansion

Find the first three terms, in ascending powers of

x

, of the expansion of

\left(1 - \dfrac{x}{4}\right)^6

.

$1 - \dfrac{3}{2}x + \dfrac{15}{16}x^2$
$1 + \dfrac{3}{2}x + \dfrac{15}{16}x^2$
$1 - \dfrac{3}{2}x + \dfrac{45}{16}x^2$
$1 - \dfrac{3}{4}x + \dfrac{15}{16}x^2$

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