Algebramedium · Past Paper
Factorize: x^2 - 4xy + 4y^2 - 9
A(x-2y+3)(x-2y-3)
B(x+2y+3)(x-2y-3)
C(x-2y+3)^2
D(x-2y-9)(x+1)
✓ Correct Answer: A — (x-2y+3)(x-2y-3)
(x-2y)^2 - 3^2 = (x-2y+3)(x-2y-3).
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