Question

49a2+140ab+100b2
$(7a) {}^{2} + 2 + 4a + 7b + (50b) { }^{2} \\ (7a + 50b) {}^{2} \\ (7a + 50b)(7a +50b)$
factorisation​

Answer 1

Answer:

49a²+140ab+100b².

(7a)²+2(7a)(10b)+(10b)².

It is in the form of a²+2ab+b²=(a+b)² where a=7a & b=10b.

(7a)²+2(7a)(10b)+(10b)²=(7a+10b)².

I think this is your answer.