Question

Ans the 8th question plz

Answer 1

Step-by-step explanation:

above attachment is the answer to your question

Answer 2

Rationalising denominator of 30/15-5√3

=> for rationalisation, multiply and divide with the 15+5√3

=> 30/15-5√3 × 15+5√3/15+5√3

=30(15+5√3)/ 225 - 75

= 30(15+5√3)/ 150

= 6(15+5√3)/ 30

= 30(3+√3)/30

= 3+√3

Ans:- 3+√3