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i-love-physics
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Homework Statement
Write the expression in simplest radical form, if a radical appears in the denominator, rationalize the denominator
Homework Equations
[tex]\sqrt{9x^2-6x+1}[/tex]
The Attempt at a Solution
the answer in the book says the answer is 3x - 1
I do not understand this, because i thought the rule was that the sum of radicals cannot be simplified
can someone please explain to me how this happend, it would be greatly appreciated.