Question

whole number question

Answer 1

When I did sqrt 125 i got 11.18 which equals to 5 sqrt 5
How do I know how to turn decimals into whole number like that ?

Answer 2

any short cut?

Answer 3

@satellite73

Answer 4

You don't!

Answer 5

You don't change it into a decimal to begin with.

Answer 6

First you factor the number.

Answer 7

Remember t hat \[
125 = 5\times 5\times5
\]

Answer 8

Thus \[
\sqrt{125}=\sqrt{5\times5\times5}=\sqrt{5\times5}\times\sqrt{5} = 5\sqrt{5}
\]

Answer 9

oh i see

Answer 10

can you give me another similar to that and maybe i'll try it? :D