Mathematics (9th Grade)
Quadratic Equations
What is the quadratic formula used to solve ax² + bx + c = 0?
x = -b ± √(b² - 4ac)/2a
x = -a ± √(c² - 4ab)/2b
x = b ± √(a² - 4ac)/2c
x = -c ± √(b² - 4ab)/2a