Question

pls answer this question...​

Answer 1

Answer:

5/√11+4

5/√11+4 × √11 - 4/√11 - 4

= 5√11 - 20 / 11 + 16

Answer = 5√11 - 20/ 11 - 16

Thank you

Answer 2

Step-by-step explanation:

$rationalise \: the \: denominator \\ we \: can \: write \: the \: above \: question \\ in \: this \: way \\ \frac{5}{ 4 + \sqrt{11} } \\ we \: have \: to \: rationalise \: \\ \frac{5}{4 + \sqrt{11} } \times \frac{4 - \sqrt{11} }{4 - \sqrt{11} } \\ \frac{5(4 - \sqrt{11}) }{(16 - 11)} \\ 4 - \sqrt{11}$

above answer is the required answer

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