Question

49 a^2 +70 ab +25b^2 by ysing appropriate identities
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Answer 1

Given expression: 49a^2 + 70ab + 25b^2

=> (7a)^2 + 2(7a)(5a) + (5b)^2

=> (7a + 5b)^2

Answer 2

$\huge\underline{ \mathbb\red{❥A} \green{n} \mathbb\blue{S} \purple{w} \mathbb \orange{E} \pink{r}} \:$

49a² + 70ab + 25b²

[(a+b)² = a²+2ab+b²]

= (7a)² + 2(7ax5b) + (5b)²

=(7a+5b)² = (7a+5b)(7a+5b)