Hi again............. I am glad to help you again.
6x + 35 + 9x = 15x(x+4) -25 6x + 35 + 9x = 15x² + 60x - 25 15x + 35 = 15x² + 60x - 25 Now, we gonna put all the common terms together 15x - 60x + 35 + 25 - 15x² = -45x + 60 - 15x² = 0 Now, we need to factorize -15(x-1)(x+4)=0 Set factors equal to 0 x -1 = 0 or x + 4 = 0 x = 1 or x = 4