(i) 4x2 – 25y2
(ii) 9x2 – 1
Answer :
(i) 4x2 – 25y2
We know that, a2 – b2 = (a + b) (a – b)
So, (2x)2 – (5y)2
Then, (2x + y) (2x – 5y)
(ii) 9x2 – 1
We know that, a2 – b2 = (a + b) (a – b)
So, (3x)2 – 12
Then, (3x + 1) (3x – 1)
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