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9х2 - 2x – 1 = 02x { }^(2) - 2x - 1 = 0
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9х2 - 2x – 1 = 0
2x { }^(2) - 2x - 1 = 0

9х2 - 2x – 1 = 02x { }^(2) - 2x - 1 = 0-example-1
User Shakti Singh
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Evaluate the value of x by using the quadratic formula.


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User Ohr
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