1 5 1
TY... You mean 5√13?
But Jordan71, there's a fractional exponent, so it's not the simplified form of the expression.
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 \sqrt{65} is already in simplified radical form.

If you want to simply a radicand with index of 2, factor the radicand where one of the factors is a perfect square (4, 9, 25, 16, 36,49, ..)

Example:  √50 = √(25)(2)  = 5√2

But √65 has no perfect square factor, so let it be.
just a tricky question, i knw its factor (13.5) is not a perfect square.. .... sometime u will resort a radicand of 325/5=25.13/5,, then, 5\/13/5..
Yes, that will do. That trick is for higher level, and not taught in Grade 9 (at least from the DepEd curriculum and textbook, not the Science High schools curriculum). Can you also write that below your answer as further explanation. I hope the inquirer gets it. Thank you :-)