M-M Λ - 1 = 3, then M & #178; Λ - 2 =,

M-M Λ - 1 = 3, then M & #178; Λ - 2 =,

For the convenience of writing, m ^ (- 1) write as 1 / m, m ^ (- 2) write as 1 / M &;
m -1/m=3
m²+ 1/m²
=(m-1/m)²+2
=3²+2
=9+2
=11

Given that | M-N + 4 | and (n-3) &# 178; are opposite numbers, then M & # 178; - N & # 178=_________ .

n-3=0
n=3
m-n+4=0
m-3+4=0
m=-1
M square - n square = 1-9 = - 8
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