factor f(x)=56x^2-15x-54

Question

First find the value of "ac", and then graph the two equations that will help find the 2 values needed to factor

Answer 1

56·(-54) = - 3024 = - 63·48, because - 63 + 48 = -15

f(x) = 56x² - 63x + 48x - 54 = 7x(8x - 9) + 6(8x - 9) = (8x - 9)(7x + 6)