Factorize each of the following algebraic expressions:9z2 - x2 + 4xy -

1.	Factorize each of the following algebraic expressions:9z2 - x2 + 4xy - 4y2
Answer» (3z)² – [x² – 2 (x) (2y) + (2y)²] = (3z)² – (x – 2y)² = [3z + (x – 2y)] [3z – (x – 2y)]

Factorize each of the following algebraic expressions:9z2 - x2 + 4xy - 4y2

Answer»

(3z)² – [x² – 2 (x) (2y) + (2y)²]

= (3z)² – (x – 2y)²

= [3z + (x – 2y)] [3z – (x – 2y)]