Question

answer me fast please
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Answer 1

Answer:

the conjugate pair of √5+√3 is (√5-√3)

(√5-√3)/(√5+√3)×(√5-√3)/(√5-√3)

=(√5-√3)^2/{(√5)^2-(√3)^2}

={(√5)^2+(√3)^2-2.√5.√3}/(5-3)

=(5+3-2√15)/2

=(8-2√15)/2

=2(4-√15)/2

=4-√15