Try another version of this question Box 1: Enter your answer as an expression. Example: 3x^2+1, x/5, (a+b)/c
Multiply and simplify:
`3 x^2 (4 x^2 + 5 x + 4)`
Be sure your variables match those in the question `12 x^4 + 15 x^3 + 12 x^2`