Math, asked by astha205, 9 months ago

rationalise the denominator 7+root 5/7-root5​

Answers

Answered by mpreet196
10

Step-by-step explanation:

\frac{7 + \sqrt{5} }{7 - \sqrt{5} } \times \frac{7 + \sqrt{5} }{7 + \sqrt{5} } \\ = \frac{ {(7 + \sqrt{5)} }^{2} }{49 - 5} \\ = \frac{49 + 5 + 14 \sqrt{5} }{44} \\ = \frac{54 + 14 \sqrt{5} }{44}

mpreet196: then.... my answer is right or not??
astha205: wrong
mpreet196: what is the answer??
astha205: 27+7 under root 5/22
mpreet196: simplify my answer by taking 2 common from numerator, you will get ur result
astha205: thanks
mpreet196: my answer is not wrong
mpreet196: hope you understand!
astha205: yes mam
mpreet196: please mark me as brainliest... if it help you
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