Math, asked by gouripaul25, 1 month ago

please help me I can't do this sum please explain

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Answers

Answered by ramenakash082

1

Answer:

When we added 4b^2 then then

is the perfect sqare

Step-by-step explanation:

49a^2 - 28ab + 4b^2

= (7a)^2 - 2×7a×2b + (2b)^2

= (7a - 2b)^2

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