х^2+х-12=0
х^2+х=12-0
х^3=12
х=4
Объяснение:
x^2 - 7|x| + 12 = 0
1) x^2 - 7x + 12 = 0
D = (-7)^2 - 4*1*12 = 49 - 48 = 1
x1 = (7 - 1) / 2 = 3
x2 = (7 + 1) / 2 = 4
2) x^2 + 7x + 12 = 0
D = 7^2 - 4*1*12 = 49 - 48 = 1
x1 = (-7 - 1) / 2 = -4
x2 = (-7 + 1) / 2 = -3
ответ: (-4; -3; 3; 4).
