You can put this solution on YOUR website!
square root over -8
there is a small 3 in front of the square root sign too.
The 'small' 3 infront of the squareroot means...you have to find out the cube root of
-8 can be written as = -2 * -2 * -2
So cuberoot of -8 = -2 ( since you have to find our cuberoot, group factors of three.....here you have only one group.....take out one number from that group...that is -2)
Similarly 27 can be written as 3* 3* 3
And cuberoot of 27 = 3
HOPE YOU FOUND THE EXPLANATION USEFUL....