Question

please tell the full solution...it's urgent...
$if \: x + \sqrt{ {x}^{2} - 9} = 3 \\ then \: find \: the \: value \: of \: x - \sqrt{ {x}^{2} - 9}$

Answer 1

√x^2-9=3-x
squaring the equation, then it becomes,
x^2-9=(3-x)^2
=x^2-9=9+x^2-6x
=-6x=-18
that is,x=3.

Therefore, x-√x^2-9=3-√9-9
=3-0=3.

Therefore, 3 is the required answer.

Hope it helps.
Please mark it as brainliest.

Answer 2

Answer:

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