Question

3√5+√5 is equal to i)3√10 ii)15 iii)4√5 iv)6√10

Answer 1

Step-by-step explanation:

4root5 is the answer

option 3

Answer 2

Answer:

The correct answer is option (iii)

Step-by-step explanation:

  $3\sqrt 5+\sqrt 5$

$=3\sqrt 5+\sqrt 5\times 1\\=\sqrt 5(3+1)=\sqrt 5\times 4\\=4\sqrt 5$

(Simplify by taking $\sqrt 5$ common)