Question 9 • Algebra I
Rewrite the equation as x² − 10x − 6 = 0, so a = 1, b = −10, and c = −6. The quadratic formula gives x = (10 ± √(100 + 24))/2 = (10 ± √124)/2. Since √124 = 2√31, the solutions simplify to x = 5 ± √31, which is choice C.
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