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Ma puteti ajuta va rog la exercitiul 7?

Ma Puteti Ajuta Va Rog La Exercitiul 7 class=

Răspuns :

A=?
2x-5>-15 | +5
2x>-10 |÷2
x>-5 => A={-4,-3,-2,-1,0,1,2,...}
B=?
3x+1<=8 | -1
3x<=7 |÷3
x<=2,(3) => B={...,-4,-3,-2,-1,0,1,2}
=> A n B = { -4,-3,-2,-1,0,1,2}