Which are the solutions of the quadratic equation?
x2 = 9x + 6
. -9 - V105 -9 + /105
• -9-157 -9 4, 157
9- y15 9 + 105
9-157 9 + 157
9 - 757
9 + 757

Three times the sum of a number and seven is negative thirty-six. what is the number?

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

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