X & # 178; - 2x-2mx + 2m + M & # 178; = 0 to solve the equation

X & # 178; - 2x-2mx + 2m + M & # 178; = 0 to solve the equation

X ^ 2-2 (1 + m) x + m (M + 2) = 0
(x-m)(x-m-2)=0
So: x = m, M + 2