Question

factorise. : 49a²+70ab+25b²​

Answer 1

Answer:

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

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

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

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Answer 2

Answer:

In order to factorise it use the formula

( a+ b) ^2 = a^2+b^2 +2ab

49a^2 + 70 ab + 25 b ^2

7a^2 + 2( 7×5)ab + 5a^2

(7a+ 5a)^2