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:
`4 x^2 (3 x^2 + 4 x + 5)`
Be sure your variables match those in the question `12 x^4 + 16 x^3 + 20 x^2`