Question

root 11-root5 by root 11+root 5​

Answer 1

Answer:

15.5454545454

Step-by-step explanation:

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Answer 2

Answer:

Hey Mate!!! Let me help you for this question........

Given:

=>  $\frac{\sqrt{11}-\sqrt{5} }{\sqrt{11} +\sqrt{5} }$

Solution:

An irrational number cannot be in the denominator so we have to rationlize the denominator .

=>  $\frac{\sqrt{11} -\sqrt{5} }{\sqrt{11}+\sqrt{5} }$  ×  $\frac{\sqrt{11} -\sqrt{5} }{\sqrt{11}-\sqrt{5} }$

=>  $\frac{(\sqrt{11} -\sqrt{5} )^2}{(\sqrt{11})^2-(\sqrt{5})^2 }$

=>  $\frac{11+5-2\sqrt{55} }{11-5}$

=>  $\frac{16-2\sqrt{55} }{6}$  (or) $\frac{8-\sqrt{55} }{3}$

Hope this helps you....

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