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Mathematics, 13.04.2020 18:16 kkakk19

Which are steps that could be used to solve 0 = 9(x2 +6x) - 18 by completing the square? Check all that apply.
18 +81 = 9(x2 - 6x +9)
18 + 9 = 96x2 + 6x +9)
18 +36 = 9(x2 + 6x +36)
11 = (x + 3)?
159 = (x + 3)?

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