Ответ:
Пошаговое объяснение:
у = 4х
х² + у + 3 = 0
1)
х² + 4х + 3 = 0
а = 1; b = 4; c = 3
D = b² - 4ac
D = 4² - 4*1*3 = 16 - 12 = 4
x1 = (- b -√D)/2a
x1 = (-4 - 2)/2*1 = -6/2 = -3
x2 = (- b + √D)/2a
x2 = (-4 + 2)/2*1 = -2/2 = -1
2)
y = 4x
y1 = 4*(-3)
y1 = -12
y2 = 4*(-1)
y2 = -4
(х1; у1) = -3; -12
(х2; у2) = -1; -4
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Ответ:
Пошаговое объяснение:
у = 4х
х² + у + 3 = 0
1)
х² + у + 3 = 0
х² + 4х + 3 = 0
а = 1; b = 4; c = 3
D = b² - 4ac
D = 4² - 4*1*3 = 16 - 12 = 4
x1 = (- b -√D)/2a
x1 = (-4 - 2)/2*1 = -6/2 = -3
x2 = (- b + √D)/2a
x2 = (-4 + 2)/2*1 = -2/2 = -1
2)
y = 4x
y1 = 4*(-3)
y1 = -12
y2 = 4*(-1)
y2 = -4
(х1; у1) = -3; -12
(х2; у2) = -1; -4