Question

please answer for my questions
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Answer 1

Ans:-

A. 1/√11 = 1/√11×√11/√11

= √11/11

B. 1/√21 = 1/√21×√21/√21

= √21/21

C. 1/√39 = 1/√39×√39/√39

= √39 = 39

D. 1/(4+√10) = 1/(4+√10)×(4-√10)/(4-√10)

= (4-√10)/16-10

= 4/6-√10/6

E. 1/(√6-√5) = 1/(√6-√5)×(√6+√5)/(√6+√5)

= (√6+√5)/6-5

= √6 + √5

F. 2/(√11-√6) = 2/(√11-√6)×(√11+√6)/(√11+√6)

= (2√11 + 2√6)/11-6

= 2√11/5 + 2√6/5

here is your answer

hope it will help you