Question

factorise:(2a-3b)² -7 (2a-3b) -30​

Answer 1

Question:

Factorise: (2a-3b)²-7(2a-3b)-30

Solution:

(2a-3b)²-7(2a-3b)-30

let (2a-3b) = x

Then,

x²-7x-30

= x²+3x-10x-30

= x(x+3)-10(x+3)

= (x-10)(x+3)

Now,

Fill the value of x

(2a-3b-10)(2a-3b+3)

Answer:

(2a-3b)²-7(2a-3b)-30 = (2a-3b-10)(2a-3b+3).