Question

Exact value.

Answer 1

\[\sqrt{108\over15}\]

Answer 2

108 factors to: 2 x 2 x 3 x 3 x 3
15 factors to: 3 x 5
You can eliminate one 3, since it cancels out. Then a 2 and a 3 come out of the radical, because they appear twice. You get \[2 \times 3 \sqrt{5} = 6\sqrt{5}\]

Answer 3

so is it 18 root 5 over 5

Answer 4

no, just 6 sqrt(5)

Answer 5

ohhhhh. thank you!

Answer 6

wait...6 sqrt(1/5) because the extra 5 was in the denominator. My bad!