Carol H. answered 09/27/17
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Two solutions: 2x2 + 7x + 6 = 0 because the discriminant, b2 - 4ac, is greater than 0.
One solution: x2 - 12x + 36 = 0 because the discriminant = 0.
No solutions: 6x2 -2x + 5 = 0 because the discriminant is less than 0. There are two imaginary solutions.