AM-520

Binomial expansion

A Math · Secondary 3 · Medium · Binomial expansion

In the expansion of

(1+2x+5x^2)(1+bx^2)^2

, the coefficient of

x^2

is

17

. Find the value of

b

.

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

Loading problem…