Question

$\sqrt{ \frac{a { }^{2} - x {}^{2} }{a {}^{2} + x { \\ }^{2} } }$
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Answer 1

Answer:

       $\sqrt{\frac{a^2-x^2}{a^2+x^2} } \\\\by \ rationalising ,\\\\= \sqrt{\frac{(a^2-x^2)(a^2+x^2)}{(a^2+x^2)(a^2+x^2)} }\\\\= \frac{\sqrt{a^4-x^4}}{(a^2+x^2)} \ (Ans.)$  

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Answer 2

AnSwEr:-

Mathematics is the study of numbers, shapes and patterns. The word comes from the Greek word "μάθημα" (máthema), meaning "science, knowledge, or learning", and is sometimes shortened to maths (in England, Australia, Ireland, and New Zealand) or math (in the United States and Canada). ... Numbers: how things can be counted.

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