변화에 따른 주어진 고려 사항
# 4 (1 + y) x ^ 2-4xy- (1-y) #
(1-y) # 4 (1 + y) x2-2 (1 + y) x + 2
# 2> (1 + y) x (2x-1) + (1-y) (2x-1) #
(2 + 1) x + (1-y)) = 0 # (2x-1)
금후 # x = 1 / 2 #
확인 중
# 4 (1 + y) x ^ 2-4xy- (1-y) #
# = 4 (1 + y) (1/2) ^ 2-4 (1/2) y- (1-y) #
# = 1 + y-2y-1 + y = 0 #
