Question

49aSquar + 70 ab + 25 bsquar

Answer 1

Answer:

$(7a+5b)^2$

Step-by-step explanation:

49a²+70ab+ 25b²

= 7² a² +70ab +5²b²

=(7a)² + 70ab + (5b)?

=(7a)² + (Sb)² + 2(7a) (5b)               [Using Identity (x+y)=$x^2$+ 2xy+y² ]

where x=70 and y=5b

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

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

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Answer 2

$\huge\color{cyan}\boxed{\colorbox{black}{ANSWER ❤}}$

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

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

IDENTITY 1 : a² +2ab + b² = (a + b)²

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