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The first few steps in solving the quadratic equation 9x2 + 49x = 22 − 5x by completing the square are shown.

9x2 + 49x = 22 − 5x

9x2 + 54x = 22

9(x2 + 6x) = 22

Which is the best step to do next to solve the equation by completing the square?

9(x2 + 6x + 3) = 25
9(x2 + 6x + 3) = 49



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