Question

Factorise : 4x^2 - y^2 + 6y - 9​

Answer 1

Answer:

(2x-y+3)(2x+y-3)

Step-by-step explanation:

We have,

4x^2 - y^2 + 6y - 9

=4x^2 - (y^2 - 6y + 9)

=(2x)^2 - (y-3)^2

=(2x-y+3)(2x+y-3)