Question

Determine the value of n int he expansion of (a+b)^n in descending powers of a, it is found that two adjacent coefficients are each equal to 126.

Answer 1

they are

Answer 2

@amistre64 I know the n=9 but that cuz i used pascal's triangle :c

Answer 3

need a faster way to approach this

Answer 4

yes now divide

Answer 5

divide what?

Answer 6

use pisces square