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- ( -7) ± √ (-7)^2 - 4(3)(-10) / 2(3) =
7 ± √ 49 + 120 / 6 =
7 ± √ 169 / 6
x1 = 7 + 13 / 6 = 20 / 6 = 10 / 3
x2 = 7 - 13 / 6 = -6 / 6 = -1
x1 = 10 / 3
x2 = -1