Final answer:
The equation can be expressed in quadratic form as (x^3 + 4)^2 = 0.
Step-by-step explanation:
This expression is a quadratic equation of the form ax² + bx + c = 0, where the constants are a = 1, b = 0.0211, and c = -0.0211.
To express it in quadratic form, we can rearrange the equation as x² + 0.0211x - 0.0211 = 0.
This matches option C: (x^3 + 4)^2 = 0.