Can someone answer my question on my acc?

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

Triangle xyz, with vertices x(-2, 0), y(-2, -1), and z(-5, -2), undergoes a transformation to form triangle x? y? z? , with vertices x? (4, -2), y? (4, -3), and z? (1, -4). the type of transformation that triangle xyz undergoes is a . triangle x? y? z? then undergoes a transformation to form triangle x? y? z? , with vertices x? (4, 2), y? (4, 3), and z? (1, 4). the type of transformation that triangle x? y? z? undergoes is a .

Show all work to identify the discontinuity and zero of the function f of x equals 6 x over quantity x squared minus 36