What is the common factor of the numerator and denominator in the expression
B3%29%28x-4%29%7D%7B%28x-4%29%28x%2B4%29%7D" id="TexFormula1" title="\frac{(2x+3)(x-4)}{(x-4)(x+4)}" alt="\frac{(2x+3)(x-4)}{(x-4)(x+4)}" align="absmiddle" class="latex-formula"> Enter your answer as a binomial, like this: x + 7
What you are being asked to do is find the exact same binomial in the top as is in the bottom.
But there's a small catch. You must stipulate that x cannot equal 4. If it does, then you will get 0/0 which is undefined. You can't have that happening -- not at this level.
