✔ 最佳答案
1.
kx(x - 1) = 2m - x
kx² - kx = 2m - x
kx² + (1 - k)x - 2m = 0
Sum of the roots of the equation above:
(p/2) + (q/2) = -(1 - k)/k
[(p/2) + (q/2)] * 2k = [-(1 - k)/k] * 2k
(p + q) k = 2k - 2
6k = 2k - 2
4k = -2
k = -1/2
Product of the roots of the equation above:
(p/2) * (q/2) = -2m/k
pq/4 = -2m/(-1/2)
3/4 = 4m
m = 3/16
Hence, k = -1/2 and m = 3/16