Mathematics, 28.05.2020 01:06 alissa64
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
9(x2 + 6x + 9) = 31
9(x2 + 6x + 9) = 103
Answers: 2
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