I'm sorry about the carelessness of my first question. The correction should read: y=x^2-4x -32.Use this function to find the x-intercepts by factoring;then show how the value of the discriminant supports your conclusion(s).
I'll try to be more careful
what two factors of 32 differ by 4?
y = (x-8)(x+4)
the discriminant is b^2-4ac = 16+128 = 144