х² + 8х - 20m = 0
x2-x1 = 2.
x1 + x2 = -8.
x1×x2 = -20m
x2 = 2+x1.
2x1 + 2 = -8
x1(x1 + 2) = -20m
x1 = -5.
x2 = -3
x1² + 2x1 = -20m
25 - 10 = -20m
15 = -20m
m = -3/4 ≈ -0,75
ответ: x1 = -5. x2 = -3
m = - 3/4 ≈ -0,75
х² + 8х - 20m = 0
x2-x1 = 2.
x1 + x2 = -8.
x1×x2 = -20m
x2 = 2+x1.
2x1 + 2 = -8
x1(x1 + 2) = -20m
x1 = -5.
x2 = -3
x1² + 2x1 = -20m
25 - 10 = -20m
15 = -20m
m = -3/4 ≈ -0,75
ответ: x1 = -5. x2 = -3
m = - 3/4 ≈ -0,75