Question

Factorise :

49a²-28ab+4b²​

Answer 1

Step-by-step explanation:

7a^2-2×7a×2b+2b^2

(7a-2b)^2

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Answer 2

Answer:

(7a - 2b)^2

Step-by-step explanation:

using identity

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