1)x^2+x-1=-12^2+12-1=155
2)2(-x+4)=2(10+4)=20+8=28
3)1-y+x=1+1+2=4
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1)x^2+x-1=-12^2+12-1=155
2)2(-x+4)=2(10+4)=20+8=28
3)1-y+x=1+1+2=4