0
2x2 - 12x + 18 = 0 (divide by 2 both sides)
x2 - 6x + 9 = 0 (the double root is 3)
(x - 3)2 = 0
x - 3 = 0 (add 3 to both sides)
x = 3
Thus, the zero of f(x) = 2x2 - 12x + 18 is 3.
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∙ 13y ago
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What is the absolute value of -18?
The answer is 18. Absolute value is the distance from zero. So 18 is the same distance from zero as -18. And minus minus 18 is positive 18, so the answer is still 18.
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