If two of the equations X & # 178; + (M & # 178; - 1) x + M = 0 are opposite to each other, then the value of M is

If two of the equations X & # 178; + (M & # 178; - 1) x + M = 0 are opposite to each other, then the value of M is

Weida theorem: - B / a = 1-m & # 178; = 0, C / A is not equal to 0, M = 1 or - 1