What is the correct sum of the polynomials 4x³ + 2x + 9 and 2x³ + 5x + 3?

To find the correct sum of the given polynomials, we need to add them together by combining like terms. The polynomials provided are:

• 4x³ + 2x + 9
• 2x³ + 5x + 3

Now, let’s add them step by step:

1. Combine the x³ terms: 4x³ + 2x³ = 6x³
2. Combine the x terms: 2x + 5x = 7x
3. Combine the constant terms: 9 + 3 = 12

Putting it all together, the sum of the polynomials is:

6x³ + 7x + 12

Thus, the correct sum of the polynomials is 6x³ + 7x + 12.