Question

Factorise 25x2+70xy+49y2 u

Answer 1

Answer:

answer is explained in above

Answer 2

25x^2=(5x)^2

70xy=2×5x×7y49y^2=(7y)^2

So 25x^2+70xy+49y^2=(5x+7y)^2

(5x+7y)(5x+7y)

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