SOLUTION: Simplify by combining like terms. x√18 - 3√8x^2

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Question 78526: Simplify by combining like terms.

x√18 - 3√8x^2
Answer by tutor_paul(519) About Me  (Show Source):
You can put this solution on YOUR website!
x%2Asqrt%2818%29-3%2Asqrt%288%2Ax%5E2%29
First, simplify what is under the sqrt signs so you can "pull stuff out"...
you can re-write this as:
x%2Asqrt%282%2A3%2A3%29-3%2Asqrt%282%2A2%2A2%2Ax%2Ax%29
Now you can see that this can be re-written as:
3x%2Asqrt%282%29-6x%2Asqrt%282%29
This can be simplifed to be:
-3x%2Asqrt%282%29