Final answer:
To simplify the expression, combine like terms by adding or subtracting the coefficients of terms that have the same variable and exponent. The simplified expression is x^2 + 4x + 2.
Step-by-step explanation:
To simplify the expression 4x^2 + 2 - 3x^2 + 6x - 2x, we can combine like terms by adding or subtracting the coefficients of terms that have the same variable and exponent.
So, we have (4x^2 - 3x^2) + (6x - 2x) + 2.
This simplifies to x^2 + 4x + 2.
Therefore, the correct answer is (b) x^2 + 4x.