Question

If x - 9 is a factor of x2 - 5 - 36 what is the other factor

Answer 1

I assume your equation is actually x^2-5x-36. You can use synthetic division to divide out the x - 9 factor and the answer will be the remaining factor. Or think about factors of -36 that add up to -5 (that is using what we know about the FOIL method).