Multiply through by
or, in standard form:
This is a quadratic equation (and factors)
Edit: Note that the domain demands that so discard any negative solution
I am having some trouble with this one. I think exponentiation would work but i can't seem to get it right. the answer is x=36. could someone show an intermediate step so i can see which form, radical or fractional exponent to use. thanks.
You will have two values for .
You need to get rid of the negative one because for your purposes we say that the square root of a negative number is undefined. So there is one correct value for here.
I think that's what you were asking about, but I'm not sure.