Mathematics

10 July, 19:20

heo started to solve the quadratic equation (x + 2) 2 - 9 = - 5. He added 9 to both sides and the resulting equation was (x + 2) 2 = 4. Next, he took the square root of each side. Which was the resulting equation of that step? x + 2 = ±4 x + 2 = ±2 x + 2 = ±8 x + 2 = ±16

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