Question

Simplify the radical expression..

square root of 128

Answer 1

Well is there a square root within 128...

Answer 2

\[\sqrt{2*64}\]\[\sqrt{2}\sqrt{64}\]\[8\sqrt{2}\]

Answer 3

thank you!

Answer 4

You are surely welcome!

Answer 5

what about square root of 500?

Answer 6

Use your calculator to see if there is a square embedded in 500... that is, what are the 2 [or more] highest factors of 5 that multiply to give you 500...

Answer 7

So you can go 500/1 500/2, 500/3... which would take forever or you can use the factors 25, 5, 4, etc...

Answer 8

Let me know if you get it..

Answer 9

so 5 * 100?

Answer 10

yup

Answer 11

So what's your final answer?

Answer 12

5 and 20? or 10?

Answer 13

\[10\sqrt{5}\]

Answer 14

ok thank you

Answer 15

Do you understand how I got this?

Answer 16

\[\sqrt{100}\sqrt{5}\]

Answer 17

bc 10 will go into 100 10 times?

Answer 18

no because the square root of 100 is 10

Answer 19

Are you using your scientific calculator to do these questions?

Answer 20

or do you have to do them out of your head?

Answer 21

No i dont have one

Answer 22

google online scientific calculator

Answer 23

ok thanks a bunch!