AM-1160

Binomial expansion

A Math · Secondary 4 · Medium · Binomial expansion

Expand and simplify the first three terms, in ascending powers of

x

, of

(3 - x)^5

.

$243 - 405x + 270x^2$
$243 + 405x + 270x^2$
$243 - 405x - 270x^2$
$243 + 135x + 270x^2$

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