Question

(2r-3s)^2-7 (2r-3s)-30 factorise the polynomial​

Answer 1

Step-by-step explanation:

Let y=2r-3s

Y^2-7y-30

Y^2-10y+3y-30

Y(y-10)+3(y-10)

(y-10)(y+3)

Replace y=2r-3s

(2r-3s-10)(2r-3s+3)