Factorize:100 – 9x2

We have,We can also write the expression as:(10)2 – (3x)2Now,Using identity: a2 – b2 = (a – b)(a + b)Hence,The given expression can be factorized as:

Q2 of 274 Page 64

Factorize:
100 – 9x²

We have,

We can also write the expression as:

(10)² – (3x)²

Now,

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

Hence,

The given expression can be factorized as:

Factorize:

25x² – 64y²

Factorize:

5x² – 7y²

Factorize:

(3x + 5y)² – 4z²