SOLUTION: Okay, So i have a Quiz tommorrow and i dont know exactly What to do when it comes to radical expressions, for example like I know the part you divide but I dont understand where yo

Algebra ->  Radicals -> SOLUTION: Okay, So i have a Quiz tommorrow and i dont know exactly What to do when it comes to radical expressions, for example like I know the part you divide but I dont understand where yo      Log On


   

Question 448542: Okay, So i have a Quiz tommorrow and i dont know exactly What to do when it comes to radical expressions, for example like I know the part you divide but I dont understand where you add the radical of sdding expressions yea i need a whole lot of help with that for example, 4(square root) times 6 (square root) ?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
What to do when it comes to radical expressions, for example like I know the part you divide but I dont understand where you add the radical of sdding expressions yea i need a whole lot of help with that for example, 4(square root) times 6
(square root) ?
:
you can only add and subtract radicals, if they are like terms
:
You can: 3sqrt%283%29 + 4sqrt%283%29 = 7sqrt%283%29 or 5sqrt%2811%29 - 3sqrt%2811%29 = 2sqrt%2811%29
:
You cannot: 3sqrt%287%29 + 4sqrt%283%29
:
:
You can multiply and divide unlike radicals
sqrt%284%29 * sqrt%286%29 = sqrt%284%2A6%29 = sqrt%2824%29
or
%28sqrt%286%29%29%2F%28sqrt%282%29%29 = sqrt%286%2F2%29 = sqrt%283%29