Question

3
If x=
)
X Х
find the value of x-2
3
2.​

Answer 1

Explanation:

Answer

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Correct option is

B

±2

x=3+22 x1=3+221×3−223−22

=3−22

(x−21)2=x+x1−2

=3+22+3−22−2=4

So, x−x1=4=±2 Ans