Find the x-intercept(s) and the coordinates of the vertex for the parabola y=x^ 2 -6x-7, there is more than one Intercept, separate them with commas

38+105= 143, 39+104=143, and you will find then adding the numbers on opposite sides, moving inwards yields the answer 138 every time. because of this, you’re going to multiply 138 times the number of pairs, which is 34. therefore, 34*138= 4692(i’m sorry if it’s the wrong numbers, but it’s the right concept)

Hmm confusing don't understand