Ответ:
x1 = 1;
x2 = -3.
Пошаговое объяснение:
(х + 3) * (х - 1) = 0
х² - х + 3х - 3 = 0
х² + 2х - 3 = 0
D = b² - 4*a*c
D = 2² - 4 * 1 * (-3) = 4 + 12 = 16.
x1,2 = -b ± √D / 2a
x1,2 = -2 ± √16 / 2*1
x1 = -2 + 4 / 2 = 2/2 = 1.
x2 = -2 - 4 / 2 = -6/2 = -3.
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Ответ:
x1 = 1;
x2 = -3.
Пошаговое объяснение:
(х + 3) * (х - 1) = 0
х² - х + 3х - 3 = 0
х² + 2х - 3 = 0
D = b² - 4*a*c
D = 2² - 4 * 1 * (-3) = 4 + 12 = 16.
x1,2 = -b ± √D / 2a
x1,2 = -2 ± √16 / 2*1
x1 = -2 + 4 / 2 = 2/2 = 1.
x2 = -2 - 4 / 2 = -6/2 = -3.