Answer:
(x-3)²=27
Explanation:
x²+6x-18=0
add 18 to both sides of the equation
To complete the square add 3² to both sides and factor what is on the left side. You will be getting
(x-3)² = 27 is the answer to this problem
C
(x-3)(x-3)=27
x^2-3x-3x+9=27
x^2-6x+9=27
-27. -27
x^2-6x-18=0
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