2013 · Q20
If one of the roots of the equation x² − bx + c = 0 is the square of the other, then which one of the following is correct?
Elementary MathematicsAlgebra
- Ab³ = 3bc + c² + c
- Bc³ = 3bc + b² + b
- C3bc = c³ + b² + b
- D3bc = c³ + b³ + b²
Explanation
Standard result: b³ = 3bc + c² + c. Answer A.