x1 = 4; x2 = -2
Объяснение:
x^2 - 2x - 8 = 0
по т. Виета
x1 + x2 = 2 x1 = 4
x1 * x2 = -8 → x2 = -2
x1 = 4 x2 = -2
х^2 - 2x – 8 = 0
D = 4 - 4 * 1 * (-8) = 4 + 32 = 36
= 6
x1 = 2+6/2 = 4
x2 = 2 - 6/2 = -2
x1 = 4; x2 = -2
Объяснение:
x^2 - 2x - 8 = 0
по т. Виета
x1 + x2 = 2 x1 = 4
x1 * x2 = -8 → x2 = -2
x1 = 4 x2 = -2
Объяснение:
х^2 - 2x – 8 = 0
D = 4 - 4 * 1 * (-8) = 4 + 32 = 36
= 6
x1 = 2+6/2 = 4
x2 = 2 - 6/2 = -2