Question

Simplify
(√3-√5) (√5 +√3)
7-2 √5​

Answer 1

Answer:

Step-by-step explanation:

=(√3-√5)(√5+√3)/7-2√5

multiplying the first two :-

=√15-3-5-√15/7-2√5

= -8/7-2√5

rationalisation:-

=-8(7-2√5)/49-20

= -56+16√5/29

Answer 2

Answer:

-2 ........ ................