1) y = x^2 - x - 3 = -1x^2 - x - 2 = 0(x - 2)(x + 1) = 0x = 2 или x = -1
2) y = x^2 - x - 3 = -3x^2 - x - 3 = 0(x - 2)(x + 1) = 0x = 2 или x = -1
3) y = x^2 - x - 3 = -13/4x^2 - x - 3 = -13/4x^2 - x - 3 + 13/4 = 0x^2 - x + 1/4 = 0(x - 1/2)(x - 1/2) = 0x = 1/2
4) y = x^2 - x - 3 = -5x^2 - x - 3 = -5x^2 - x - 3 + 5 = 0x^2 - x + 2 = 0(x - 2)(x + 1) = 0x = 2 или x = -1
Ответы:1) x = 2 или x = -12) x = 2 или x = -13) x = 1/24) x = 2 или x = -1
1) y = x^2 - x - 3 = -1
x^2 - x - 2 = 0
(x - 2)(x + 1) = 0
x = 2 или x = -1
2) y = x^2 - x - 3 = -3
x^2 - x - 3 = 0
(x - 2)(x + 1) = 0
x = 2 или x = -1
3) y = x^2 - x - 3 = -13/4
x^2 - x - 3 = -13/4
x^2 - x - 3 + 13/4 = 0
x^2 - x + 1/4 = 0
(x - 1/2)(x - 1/2) = 0
x = 1/2
4) y = x^2 - x - 3 = -5
x^2 - x - 3 = -5
x^2 - x - 3 + 5 = 0
x^2 - x + 2 = 0
(x - 2)(x + 1) = 0
x = 2 или x = -1
Ответы:
1) x = 2 или x = -1
2) x = 2 или x = -1
3) x = 1/2
4) x = 2 или x = -1