(5m-1)*(m+1)-5m*(m+2) = 5m²+5m-m-1-5m²-10m = 5m-m-1-10m = -6m-1
Значение при m = -1 5/6
-6m-1 = -6*(-1 5/6)-1 = 6*(11/6)-1 = 11-1 = 10
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(5m-1)*(m+1)-5m*(m+2) = 5m²+5m-m-1-5m²-10m = 5m-m-1-10m = -6m-1
Значение при m = -1 5/6
-6m-1 = -6*(-1 5/6)-1 = 6*(11/6)-1 = 11-1 = 10