Simplify the following expression.

2x + 3x3 - 5x2 + x2 + 7x + 1 + 7x - 3x3 - 4

-4x^2 + 16x - 3

Step-by-step explanation:

2x + 3x^3 - 5x^2 + x^2 + 7x + 1 + 7x - 3x^3 - 4

Line up the numbers in decreasing power

3x^3 - 3x^3 - 5x^2 + x^2 + 7x + 2x + 7x - 4+1

Combine like terms

-4x^2 + 16x - 3

-4x^2+16x-3 is your answer