Factor the trinomial x^2-8x-65

Ineed to learn how to solve this problem

Which equation represents a direct linear variationa. y=x2b. y=2/5xc. y=1/xd. y=x+3

Apolynomial has two terms. check all of the factoring methods that should be considered. common factor difference of cubes sum of cubes difference of squares perfect-square trinomial factoring by grouping