Question

I need help completing this problem ASAP

Answer 1

A.
`8√(5)`

Explanation:

`√(45) + √(125) =`

`= √(9 * 5) + √(25 * 5)`

`= 3√(5) + 5√(5)`

`= 8√(5)`

Answer 2

8 sqrt(5)

Explanation:

sqrt(45) + sqrt(125)

Rewriting

sqrt(9*5) + sqrt( 25 *5)

we know sqrt(ab) = sqrt(a) sqrt(b)

sqrt(9) sqrt(5) + sqrt(25) sqrt(5)

3 sqrt(5)+5 sqrt(5)

Add like terms

8 sqrt(5)