Question

Factorize by spilling middle term: 9(x-2y)^2-4(x-2y)-13

Answer 1

Step-by-step explanation:

9(x-2y)²-4(x-2y)-13=0

let

x-2y=A

so

9A²-4A-13=0

use the quadratic formula

a=9

b=-4

c=-13

so we get

A= 13/9

A=-1

so

x-2y=13/9

x-2y=-1