Answer:
x = 3
Explanation:
Given a quadratic in standard form
y = ax² + bx + c ( a ≠ 0 )
Then the axis of symmetry is
x = -
y = 3x² - 18x + 1 ← is in standard form
with a = 3, b = - 18
x = - = 3
Axis of symmetry is x = 3
x=3
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