Coefficient of x² in 4x³ + 3x² - x + 1 is:
Solve: + ⁺15 + ⁻4 + ⁻11.
Solve: - ⁺0 + ⁺3 - ⁺11 + ⁺12
Solve: - ⁺0 + ⁺9 + ⁻11 - ⁺23.
Solve: - ⁺5 + ⁻11 + ⁺6.
