n²-(n²+2n+1)>2
n²-n²-2n-1>2
-2n>2+1
-2n>3
n<3÷(-2)
n<-1,5
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n²-(n²+2n+1)>2
n²-n²-2n-1>2
-2n>2+1
-2n>3
n<3÷(-2)
n<-1,5