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Determinati multimile A={n,2n+8/n+1}

Răspuns :

Shadowninja
se simplifica n cu n si ne da 8+2=10. A=10
Maryanabel3579
2n+8|n+1. |•(-2) =>2n+8|-2n-2___________ 2n+8|2n+1___________________________=>2n+8|-2n-2+2n+1=>2n+8|-1=>2n+8€D1(divizori lui 1)={+1,-1}_________________ C1:2n+8=1=>2n=1-8=>2n=-7=>n=-7/2____ C2:2n+8=-1=>2n=-1-8=>2n=-9=>n=-9/2___ A={-9/2,-7/2}

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