Remove anything that appears twice. Outside the radical it is just one factor. So remove 2*2 and x*x. Outside the radical those are 2x which leaves -1*2*x or -2x inside the radical.

But for square root there can't be a negative number inside the radical. The square root of -1 is the imaginary number i. So this becomes

If the problem is a cuberoot then pull out anything that's shown three times, and the factor is negative because -*-*- = -. So the answer would be -2x.

Hope the solution helped. Sometimes you need more than a solution. Contact fcabanski@hotmail.com for online, private tutoring, or personalized problem solving (quick for groups of problems.)
Answer by josmiceli(19441)   (Show Source): You can put this solution on YOUR website!
Is this it:
? If so:
You can break it up like this:




This is only slightly better, so you're
right- it isn't much of a simplification.