Question

49x2-9
$49x {}^{2} - 9$

Answer 1

= 49x² - 9

= (7x)² - (3)²

= (7x - 3)(7x + 3)

(a² - b² = (a+b)(a-b)


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Answer 2

Hii...

Here is ur answer :-

____________________

49 x ^2 -9

We can solve this by using the identity a ^2 - b^2

(7^2) x ^2 - (3) ^2

( 7x) ^2 - ( 3)^2

( 7x+3) (7x -3) ( as a^2 -b ^2 = (a+b) (a-b)

Hope it helps!!