1.) x^3+6x^2-4x-24 x^2(x + 6) - 4(x + 6) (x + 6)(x - 2)(x + 2) Roots are: -6 , -2 , 2 2) (2x + 3)(4x^2 - 6x + 9) = 0 x = -3/2 => only real root 3) x^2(x + 7) + 4(x + 7) = 0 (x^2 + 4)(x + 7) = 0 x = -7 => only real root.