AM-1475

Binomial expansion

A Math · Secondary 4 · Easy · Binomial expansion

Consider the binomial expansion of

(3x - \dfrac{2}{x^2})^7

.

What is the power of

x

in the general term of this expansion?

$7 - 3r$
$7 - r$
$7 - 2r$
$3r - 7$

Sign in to check your answer and see the hint and the worked explanation. Free on PrepLab High.

Loading problem…