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madalainerose:
The first three steps for solving the quadratic equation by completing the square are shown. Fill in the missing number in the last step. 9x2 +54x = 7 9(x2 + 6x) = 7 9(x2 + 6x + 9) = 7 + ____
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Vocaloid:
On the left side you added 9(9) so the right side must be the same operation
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