Posted by Miley on .
Oh man.... I don't understand how to simplify though... Can u please help me with These questions :
2 * square root 18
5* square root 48
3* square root 54

Math quick help 
Reiny,
To change an entire radical to a mixed radical, look for a factor of the number which is a PERFECT SQUARE.
e.g.
2√18
= 2*√9√2
= 2*3*√2
= 6√2
If there is no perfect square as a factor, then the radical cannot be changed to a mixed
Make yourself a short list of perfect squares
4,9,16,25,36,49,64,81,100, ......
5√48
= 5√16√3
= 5*4√3
= 20√3
you do the last one the same way.
btw, you can always check your result by using your calculator . 
Math quick help 
Miley,
Ok thank u!!!!