Question

find to three places of decimal , the value of each of the following:
3+√5 / 3–√5​

Answer 1

Step-by-step explanation:

3+√5/3-√5

the denominator should not contain root

so conjugate multiplication

conjugate of 3-√5 is 3+√5

ie,

3+√5(3+√5)/3-√5(3+√5)

=((3+√5)^2)/2

= (9+6√5+5)/2

=(14+6√5)/2

=(14+13.41)/2

=27.41/2=13.705