Question

Simpilfy the radical expression.

Answer 1

Prime factor 160, and you get 2^5 * 5. The equation now becomes -4 * (4 * sqrt(2)) * sqrt(5).

Answer 2

I got this far... \[4 (4 \times \sqrt{10})\]

Answer 3

Don't combine both sqrt's. It will do you no good if you're simplifying the expression.

Answer 4

Right but the answers are this
A.\[-4\sqrt{80}\] B.\[-4\sqrt{16}\] C.\[-16\sqrt{10}\] D.\[\sqrt{10}\]

Answer 5

first of all find the quare root of 160 and then solve bracket and then multiply.

Answer 6

\[\sqrt{160} = 4\sqrt{10}\] Right?

Answer 7

@muhammad9t5 Since 160 is not a square number, you can't do that without having to round, thus against the idea of simplifying.

sqrt(160) = 4 * sqrt(10). Multiply it by -4 and you get answer C.

Answer 8

Thanks