A quadratic equation is written in four equivalent forms below.
||y = (x - 4)(x + 6)
||y = x(x - 4) + 6(x - 4)
||y = (x + 1)2 - 25
||y = x2 + 2x - 24
Which of the forms shown above would be the most useful if attempting to find the y-intercept of the quadratic equation?