Answer:
-6x^4 + 3x^2 + 4x + 2
Explanation:
Standard form of a quadratic equation is ax^2 + bx + c. However, the highest value does not have to be squared. It could be to the power of 4, 5, etc. as long as the order of exponents remains from greatest to least.
3x^2 - 6x^4 + 2 + 4x
In standard form, it should have -6x^4 first, then 3x^2, then 4x, and finally 2.
-6x^4 + 3x^2 + 4x + 2
Therefore, the answer is option 2.