Question

rationalise the denominator 2+√5/√5​

Answer 1

Answer:

=2+√5÷√5

=2+1

=3

Step-by-step explanation:

Hence, 3 is the answer of your question.

Hope so it helps you.

Answer 2

Answer:

(2√5+5)/5

Step-by-step explanation:

Given that,

(2+√5)/√5

consider denominator

⇒√5

to rationalise it we should multiply it with '√5'

so,

divide and multiply by √5 with numerator & denominator

⇒(2+√5)/√5 × √5/√5

⇒(2+√5)(√5)/(√5)(√5)

⇒(2√5+5)/5                     (∵(a+b)c=ac+bc)

∴ rationalisation of the denominator of 2+√5/√5 = (2√5+5)/5

HOPE THIS WOULD BE HELPFUL FOR YOU