82208
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Solving Quadratic Equations: Completing the Square (Continued)

Question 82208 • Common Core Algebra I 2014 - MA3109 B-CR

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 = (x + 6)2 = (x + 3)2

Question illustration
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)2
E
= (x + 6)2
Option E
F
= (x + 3)2
Option F
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