# Math Help - Radical numbers with fractions...

1. ## Radical numbers with fractions...

Okay, so this is due tomorrow...

Here goes! Its 8th grade Algebra, 1 and 2, although this is supposed to be 1.

There is a 10 to the left, and then a radical expression of 20/64 (as a fraction) inside the radical sign..

I really should get this, since we did it in class, but Im totally cunfuzzled at the moment.

2. Hello, Aeriska!

Simplify: . $10\sqrt{\frac{20}{64}}$

First, reduce the fraction: . $10\sqrt{\frac{5}{16}}$

Make "separate" square roots: . $10\cdot\frac{\sqrt{5}}{\sqrt{16}}$

Since $\sqrt{16} = 4$, we have: . $10\cdot\frac{\sqrt{5}}{4}$

Reduce, and we get: . $5\cdot\frac{\sqrt{5}}{2}\:\text{ or }\:\frac{5\sqrt{5}}{2}$

3. Thanks so much. Got it right xD But I dont know how to do the actual math symbols that you did, in typing.

4. Ever so helpful. Thankies ^^