Question

using suitable identies evaluate (6x-7) (6x+7)​

Answer 1

Answer:

It is of the form (a-b)(a+b)

where a= 6x

b = 7

We know that

${a}^{2} - {b}^{2} = (a - b)(a + b)$

So by squaring both we get

$36 {x}^{2} - 49$

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