Question

if x upon 6 =7 upon -3​

Answer 1

Answer:

Given, (x2 - 22 )/(x - 2)

If we put x = 2 directly, we get

(22 - 22 )/(2 - 2) = (4 - 4)/0 = 0/0

This number is not defined.

Now, apply identity (x2 - a2 ) = (x - a)*(x + a) , we get

= {(x - 2)*(x + 2)}/(x - 2)

= x + 2

When x = 2, we get

x + 2 = 2 + 2 = 4

So, 4 is the correct answer