Question

please help me to solve this.​

Answer 1

Answer:

$\frac{ \sqrt{a + x} - \sqrt{a - x} }{\sqrt{a + x} + \sqrt{a - x}} \times \frac{\sqrt{a + x} - \sqrt{a - x}}{\sqrt{a + x} - \sqrt{a - x}} \\ \frac{ {(\sqrt{a + x} - \sqrt{a - x})}^{2} }{ { (\sqrt{a + x}) }^{2} - { (\sqrt{a - x}) }^{2} } \\ \frac{(\sqrt{a + x}) ^{2} + { (\sqrt{a - x}) }^{2} - 2 \sqrt{(a + x)(a - x)} }{a + x - a + x} \\ \frac{a + x + a -x - 2 \sqrt{(a + x)(a - x)}}{2x} \\ \frac{2a - 2 \sqrt{( {a}^{2} - {x}^{2} ) } }{2x} \\ \frac{2}{2} \times \frac{a - \sqrt{ {a}^{2} - {x}^{2} } }{x} \\ \frac{a - \sqrt{ {a}^{2} - {x}^{2} } }{x}$

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