Решить уравнение: через дескрименант(если можно с обеснениями)
3) 3х:=^2+ 7х – 6 = 0
5) 1– 6х + 9х^=0
7) х^2– 10х – 24 = 0
8)4x^2+ 3х – 1 = 0
10) -12 + х^2=0
11)-x^2+ 18 = 0
14)2x^2+ х = 0
15)5x^2+ х = 0

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