Q11 of 274 Page 64

Factorize:

8ab2 – 18a3

We have,



= 2a(4b2 – 9a2)


We can also write the expression as:


= 2a[(2b)2 – (3a)2]


Now,


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



Hence,


The given expression can be factorized as:


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