What is the sum of the solutions of x² − 7x + 12 = 0?
✓ Correct Answer: Option A
By Vieta's formulas, the sum of solutions equals −(−7)/1 = 7. Or factor: (x−3)(x−4) = 0, so 3 + 4 = 7.
By Vieta's formulas, the sum of solutions equals −(−7)/1 = 7. Or factor: (x−3)(x−4) = 0, so 3 + 4 = 7.