Question

$49 {a}^{2} + 7ab + 25 {b}^{2}$
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Answer 1

Step-by-step explanation:

$49a ^{2} + 70ab + 25b ^{2}$

$=( 7a )^{2} + 2(7a)(5b) + (5 {b)}^{2}$

$= (7a + 5b) ^{2}$

$using \: identity \: (a + b) ^{2} = {a}^{2} + 2ab + {b}^{2}$

$= (7a + 5b) (7a + 5b)$

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Answer 2

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