The absolute value of a number is its distance from 0
Example : The absolute value of 3 or -3 is 3 because they have same distance from 0 and absolute value of 3.
The symbol for absolute value is a bar |∣vertical bar on each side of the number.
Example : The absolute value of 25, we can write it like this : |25|=25
Simplyfying Radicals :
A radical is a number that has a fraction as its exponent.
Example :
Another example :
Ex:
![\sqrt[3]{96}= \sqrt[3]{16.6}=2\sqrt[3]{12}](http://s0.wp.com/latex.php?latex=%5Csqrt%5B3%5D%7B96%7D%3D+%5Csqrt%5B3%5D%7B16.6%7D%3D2%5Csqrt%5B3%5D%7B12%7D&bg=ffffff&fg=000000&s=0 "\sqrt[3]{96}= \sqrt[3]{16.6}=2\sqrt[3]{12}")
![\sqrt[3]{-81}= \sqrt[3]{-27.3}=-3\sqrt[3]{3}](http://s0.wp.com/latex.php?latex=%5Csqrt%5B3%5D%7B-81%7D%3D+%5Csqrt%5B3%5D%7B-27.3%7D%3D-3%5Csqrt%5B3%5D%7B3%7D&bg=ffffff&fg=000000&s=0 "\sqrt[3]{-81}= \sqrt[3]{-27.3}=-3\sqrt[3]{3}")
