Question

factrize the following by suitable identity
(a) 49a²+70ab+25 b²

(b) 25x²/4+y²/9
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Answer 1

Answer:

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Step-by-step explanation:

49a² + 70ab + 25b²

[(a+b)² = a²+2ab+b²]

= (7a)² + 2(7ax5b) + (5b)²

= (7a+5b)² = (7a+5b)(7a+5b)

5x/2)^2 - (y/3)^2

using a^2 - b ^2 = (a+b) (a- b)

= ( 5x/2+ y/3)( 5x/2-y/3)