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Best Answer

18x2 + 2
= 2(9x2 + 1)
= 2(9x2 - -1)
= 2[(3x)2 - i2]
= 2(3x + √-1)(3x - √-1) (substitute i for √-1)
= 2(3x + i)(3x - i)

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15y ago
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Q: How do you factor 18X squared plus 2?
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