AM-1374

Binomial expansion

A Math · Secondary 4 · Easy · Binomial expansion

Find, in ascending powers of

x

, the first three terms of the expansion of

(1+3x)^5

.

$1+15x+90x^2$
$1+10x+75x^2$
$1+15x+45x^2$
$1+30x+90x^2$

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