What is the product of the polynomials below?

(6x2-3x-6) (4x2 + 5x+4)

24x^4+18x^3-15x^2 - 42x-24

Step-by-step explanation:

(6x^2-3x-6) (4x^2 + 5x+4) =

6x^2*4x^2 + 6x^2*5x+6x^2*4

-3x*4x^2 - 3x*5x-3x*4

- 6*4x^2 - 6*5x-6*4=

24x^4+30x^3+24x^2-12x^3-15x^2 - 12x

-24x^2-30x-24=

24x^4+18x^3-15x^2 - 42x-24