AnswersCommon Core Math III ASolving Quadratic Equations: Completing the Square (Continued)Question 13
13
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Solving Quadratic Equations: Completing the Square (Continued)
Question 13 • Common Core Math III A
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 = 9(x2 + 6x + 9)18 + 36 = 9(x2 + 6x + 36)11 = (x + 3)2 [image 1] = (x + 6)2 [image 2] = (x + 3)2
Answer
A
18 + 81 = 9(x2 + 6x + 9)B
18 + 9 = 9(x2 + 6x + 9)C
18 + 36 = 9(x2 + 6x + 36)D
11 = (x + 3)2E
= (x + 6)2F
= (x + 3)2