y = 2x+ 8
подставим это в первое уравнение:
2x + 8 = 2x^2 - 3x + 1
2x^2 - 5x - 7 = 0
D = 25 + 4*2*7 = 25 + 56 = 81
x1 = (5 + 9)/4 = 3.5
x2 = (5 - 9)/4 = -1
y1 = 2*3.5 + 8 = 15
y2 = -2 + 8 = 6
Ответ: (3.5; 15), (-1; 6)
y = V2x + 3
V2x + 3 = x^2 - 4V2x + 3
x^2 -5V2x = 0
x(x-5V2) = 0
x1 = 0 _____ x2 = 5V2
y1 = 3 _____ y2 = 10+3 = 13
Ответ: (0; 3), (5V2; 13)