Factorise:
(i) 49a² + 70ab + 25b
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Step-by-step explanation:
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Answered by
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Answer:
in this identity is used i.e (a+b)² =a²+b²+2ab
Step-by-step explanation:
49a²+70ab+25b²
(7a)²+2*7*5*ab+(5b)²
(7a+5b)²
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