Question

49x²-1 using identity (a+b)(a-b)​

Answer 1

Answer:

(7x)²-1²

Step-by-step explanation:

hope it's helpful for you.

Answer 2

Step-by-step explanation:

$49 {x}^{2} - 1$

$= ( {7x)}^{2} - {1}^{2}$

$= (7x + 1)(7x - 1)$

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