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1 2 3 n решите. M^2+N^2+2mn+2m+2n+1. M - 3 N + 2 M =. M+2n/2-3m/m2+4mn+4n2/3m2-2m. 4n если m = -1,n=1,5.
M^2+N^2+2mn+2m+2n+1. M - 3 N + 2 M =. M+2n/2-3m/m2+4mn+4n2/3m2-2m. 4n если m = -1,n=1,5.

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