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The Quadratic Formula

1. Equations and Inequalities / The Quadratic Formula / Problem 1

Problem 1

By completing the square, solve the following equation.
x² - 2x - 23 = 0

A

x = 1 + 2√6, 1 - 2√6

B

x = - 1 + 2√6, - 1 - 2√6

C

x = 2√6 - 1, 2√6 + 1

D

x = 6√2 - 1, 6√2 + 1