Answer:
(x - 9)² = 87
Step-by-step explanation:
Move the -6 to the other side
x² - 18x = 6
The number you add to each side is (b/2)²
(b/2)² is (-18/2)² = 81
x² - 18x + 81 = 87
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Answer:9
Step-by-step explanation:pp
