Question

plzzz help me ...
I need these answers ​

Answer 1

Answer:

21√5-7√5/12.............

Answer 2

Ans:- 21/3√5 + √3

= 21/3√5+√3 × 3√5 - √3 / 3√5 - √3

= 21(3√5 - √3) / (3√5)^2 - (√3)^2

= (63√5 - 21√3) / 45 - 9

= 3(21√5 - 7√3) / 3 × 12

= (21√5 - 7√3) / 12

here is your answer

hope it will help you