The product of a binomial and a trinomial is x 3 + 3 x 2 - x + 2 x 2 + 6 x - 2. Which expression is equivalent to this product after it has been fully simplified?

x3 + 5x2 + 5x - 2

x3 + 2x2 + 8x - 2

x3 + 11x2 - 2

x3 + 10x2 - 2

If you would like to find the equivalent expression, you can calculate this using the following steps:

x^3 + 3 * x^2 - x + 2 * x^2 + 6 * x - 2 = x^3 + 3 * x^2 + 2 * x^2 - x + 6 * x - 2 = x^3 + 5 * x^2 + 5 * x - 2

The correct result would be x^3 + 5 * x^2 + 5 * x - 2.