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11 March, 20:11

Theo 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?

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  1. 11 March, 20:40
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    (x + 2) ^2 - 9 = - 5 ... he added 9

    (x + 2) ^2 = 4 ... take sqrt of both sides, eliminating the ^2 on the left

    x + 2 = sqrt 4 <==

    or they might want this one ... x + 2 = 2
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