=>(x-7)^x+1-(x-7)^x+1.(x-7)^10=0
=>(x-7)^x+1.[1-(x-7)^10]=0
TH1:(x-7)^x+1=0<=>x-7=0=<=>x=7
TH2:1-(x-7)^10=0<=>(x-7)^10=1\(\Leftrightarrow\int^{x-7=1}_{x-7=-1}\Leftrightarrow x\in\left\{6;8\right\}\)
vậy x E {6;7;8}
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