Mathematics (10th Grade)
Algebra
What is the quadratic formula used to find the roots of a quadratic equation ax² + bx + c = 0?
-b ± √(b² - 4ac) / 2a
b ± √(b² + 4ac) / 2a
-b ± √(b² + 4ac) / 2a
b ± √(b² - 4ac) / 2a
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