Question

20 points. please help..

Answer 1

see explanation

Explanation:

She has taken the factor 2 out of the square root incorrectly

using the rule of radicals

`√(ab)` ⇔
`√(a)` ×
`√(b)`, then

`√(50)`

=
`√(2(25))`

=
`√(2)` ×
`√(25)`

=
`√(2)` × 5 = 5
`√(2)` ≈ 7.07