Question

using suitable identity to get the product:::

( 6x - 7 ) ( 6x + 7 )

Answer 1

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

(6x)^2 - (7)^2 = 36x^2 - 49

Answer 2

Hey friend,
The suitable identity is :
(a + b) (a - b) = a^2 - b^2

And the solve will be:
=6x^2 - 7^2
=36x^2 - 49
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