SOLUTION: Simplify by combining like terms x(rad18) -3(rad8x^2) i think i got it but want to be sure is x=3/5?

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Question 122063: Simplify by combining like terms x(rad18) -3(rad8x^2) i think i got it but want to be sure is x=3/5?
Answer by tutor_paul(519) About Me  (Show Source):
You can put this solution on YOUR website!
I think this is what your problem is saying, if not, let me know:
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Simplify by combining like terms:
x%2Asqrt%2818%29-3sqrt%288x%5E2%29
First, rewrite the expression with the quantities written under the radicals in terms of their factors.:
x%2Asqrt%282%2A9%29-3sqrt%282%2A4%2Ax%5E2%29
This can be written as:
x%2Asqrt%282%29%2Asqrt%289%29-3sqrt%282%29%2Asqrt%284%29%2Asqrt%28x%5E2%29
Now, you can simplify some of these square root terms, since they are perfect squares:
x%2Asqrt%282%29%2A3-3sqrt%282%29%2A2%2Ax
Rewriting this:
3x%2Asqrt%282%29-6x%2Asqrt%282%29
Combine these and you are done:
highlight%28-3x%2Asqrt%282%29%29
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Good Luck,
tutor_paul@yahoo.com