Question

Evaluate √5+√3/ √5-√3 given that √15 = 3.87

Answer 1

Here is the answer:

Rationalizing the denominator we get :

(√5+√3)^2/(√5)^2-(√3)^2

= 5+3+2√15/5-3

=8+2√15/2

Taking 2 common out

= 2(4+√15)/2

= 4+√15

=4+3.87

=7.87

Answer 2

Answer:

7.87

Step-by-step explanation:

You Just have to rationalize the given nos. and put the value of √15.

Hope this helps.;)

√5+√3/√5-√3 X √5+√3/√5+√3

(√5+√3)²/ (√5)²-(√3)²

√5²+2X√5X√3+√3² / 5-3    [(a+b)²=a²+2ab+b²]

5+2√15+3 / 2

8+2√15 / 2

8+2X3.87 / 2                          (√15 = 3.87)

8+7.74 / 2

15.74  / 2

7.87

HOPE IT HELPS!!!

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