Factorize:a – b – a2 + b2

We have:= (a – b) – (a2 - b2)= (a – b) – (a – b)(a + b)Hence,The factorization of the given expression is,

Q23 of 274 Page 64

Factorize:
a – b – a² + b²

We have:

= (a – b) – (a² - b²)

= (a – b) – (a – b)(a + b)

Hence,

The factorization of the given expression is,

Factorize:

4x² – 9y² – 2x – 3y

Factorize:

x⁴ – 1

Factorize:

x⁴ – 625

Factorize:

x² + 11x + 30