Question

a. Factorise : 9x2 - 4a2 + 4ay - y2​

Answer 1

$\huge\bold\red{HOLA}$

9x2 - 4a2 + 4ay - y2

= 9x2 - (4a2 - 4ay + y2), taking ' - ' common

= (3x)2 - (2a - y) 2 , since A2 - 2AB + B2 = (A - B)2

= [3x - (2a -y)][3x + (2a - y)], using A2 - B2 = (A - B)(A + B)

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

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Answer 2

Answer:

I note that the previous answer is apt.

Step-by-step explanation:

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