Math, asked by sameeralam8851702086, 5 months ago

(2a-7b)
pls bta do jldi se

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Answered by anonymouslygreat

1

Answer:

4a² -28b + 49b²

Step-by-step explanation:

(2a - 7b)²

Using identity (a - b)² = a² - 2ab + b²

(2a)² -2(2a)(7b) + (7b)²

= 4a² -28b + 49b²

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