(1)Решить уровнения1)3x^2=02)(x+1)(x-1)=03)4x^2-1=04)3x^2=5x5)4x^2-4x+1=06)x^2-16x-17=07)0,3x^2+5x=28)x^2-4x+5=0(2) Разложить на множетили1) x^2+x-6 2) 2x2-x-3

1)Коэффициенты:
a = 3. b = 0. c = 0.
D = b^2 - 4ac = 0^2 - 4 * 3 * 0 = 0.
x = -b/(2a).
x = 0/(2 * 3) = 0.
Ответ: 0.
2)a = 1. b = 0. c = -1.
D = b^2 - 4ac = 0^2 - 4 * 1 * (-1) = 4.
x1 = (-0 + 2) / (2 * 1) = 1.
x2 = (-0 - 2) / (2 * 1) = -1.
Ответ: 1, -1.
3)a = 4. b = 0. c = -1.
D = b^2 - 4ac = 0^2 - 4 * 4 * (-1) = 16.
D^(1/2) = 4.
x1 = (-0 + 4) / (2 * 4) = 0,5.
x2 = (-0 - 4) / (2 * 4) = -0,5.
Ответ: 0,5, -0,5.
4)a = 3. b = -5. c = 0.
 D = b^2 - 4ac = -5^2 - 4 * 3 * 0 = 25.
D^(1/2) = 5.
x1 = (5 + 5) / (2 * 3) = 1 2/3.
x2 = (5 - 5) / (2 * 3) = 0.
Ответ: 1 2/3, 0.
5)a = 4. b = -4. c = 1.
D = b^2 - 4ac = -4^2 - 4 * 4 * 1 = 0.
x = -b/(2a).
x = 4/(2 * 4) = 0,5.
Ответ: 0,5.
6)a = 1. b = -16. c = -17.
D = b^2 - 4ac = (-16)^2 - 4 * 1 * (-17) = 324.
D^(1/2) = 18.
x1 = (16 + 18) / (2 * 1) = 17.
x2 = (16 - 18) / (2 * 1) = -1.
Ответ: 17, -1.
7)a = 0,3. b = 5. c = -2.

D = b^2 - 4ac = 5^2 - 4 * 0,3 * (-2) = 27,4.
D^(1/2) = 5,2345.
x1 = (-5 + 27,4^(1/2)) / 0.6.
x2 = (-5 - 27,4^(1/2)) / 0.6.
8)a = 1. b = -4. c = 5.
D = b^2 - 4ac = (-4)^2 - 4 * 1 * 5 = -4.
Ответ: нет решений.
9)a = 1. b = 1. c = -6.
D = b^2 - 4ac = 1^2 - 4 * 1 * (-6) = 25.
D^(1/2) = 5.
x1 = (-1 + 5) / (2 * 1) = 2.
x2 = (-1 - 5) / (2 * 1) = -3.
Ответ: 2, -3.
10)a = 2. b = -1. c = -3.
D = b^2 - 4ac = (-1)^2 - 4 * 2 * (-3) = 25.
D^(1/2) = 5.
x1 = (1 + 5) / (2 * 2) = 1,5.
x2 = (1 - 5) / (2 * 2) = -1.
Ответ: 1,5, -1.