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9x2 + 18x - 16 = 0

⇒ (3x - 2)(3x + 8) = 0

⇒ 3x - 2 = 0 → x = 2/3

or 3x + 8 = 0 → x = -22/3

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Q: How do you solve 9x squared plus 18x minus 16 equal 0?
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