Cubic Equation Calculator Cubic Equation Calculator Solve $ax^3 + bx^2 + cx + d = 0$ with step-by-step explanation. Enter Coefficients a (for x³) b (for x²) c (for x) d (constant) Show Explanation 2 decimals 4 decimals 6 decimals Calculate Roots Clear Calculating… Results Copy Results Download Step-by-Step Explanation