So, just a note of formatting, to indicate something is an exponent of something else, use the carat (^) sign for instance x^3 means x cubed. x3 means 3x. Anyways, though, let's factor. You can factor out an x from each variable. x(x^2-5x-14) Now, to factor this, think of what will add to -5, and multiply to -14. -7 and 2 work. So, this factors out to x(x-7)(x+2) Choice D is the correct factorization.
