Find the value of X if \(\frac{\sqrt{2}}{x+\sqrt{2}}=\frac{1}{x-\sqrt{2}}\)
The correct answer is A. 3√2+4
To find the value of \(x\) from the given equation:
\(\frac{\sqrt{2}}{x+\sqrt{2}} = \frac{1}{x-\sqrt{2}}\)
We can cross-multiply to eliminate the fractions:
\(\sqrt{2} \cdot (x - \sqrt{2}) = 1 \cdot (x + \sqrt{2})\)
Expand both sides:
\(\sqrt{2}x - 2 = x + \sqrt{2}\)
Now, isolate the term with \(x\) on one side:
\(\sqrt{2}x - x = \sqrt{2} + 2\)
Factor out \(x\):
\(x (\sqrt{2} - 1) = \sqrt{2} + 2\)
Finally, solve for \(x\):
\(x = \frac{\sqrt{2} + 2}{\sqrt{2} - 1}\)
Rationalize the denominator:
\(x = \frac{(\sqrt{2} + 2)(\sqrt{2} + 1)}{(\sqrt{2} - 1)(\sqrt{2} + 1)}\)
\(x = \frac{2 + 2\sqrt{2} + \sqrt{2} + 2}{2 - 1}\)
\(x = 4 + 3\sqrt{2}\)
So, the value of \(x\) is \(4 + 3\sqrt{2}\).
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