Q. 205.0( 3 Votes )

# Factorize:x2 – y2 + 6y – 9

We have,

= [x2 – (y2 – 2(y)(3) + 32]

We can also write the expression as:

= [(x)2 – (y – 3)2]

Now,

Using identity: a2 – b2 = (a – b)(a + b)

Hence,

The given expression can be factorized as:

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