Question

ex 32 urgent va rog....

Answer 1

Multimea A:

|2×-3|<=5

-5<=2×-3<=5

-2<=2×<=8

-1<=×<=4

x exista in multimea Z rezulta ca x={-1,0,1,2,3,4}

Multimea B:

(×-2)/(×+2) exista in multimea Z

x+2|×-2(1)

×+2|×+2(2)

(1),(2) se rezulta ×+2|x-2-x-2

x+2|-4

x+2 exista in D-4={-1,4,-4,1,2,-2}

x={-3,2,-6,-1,0,-4}

A reunit cu B={-6,-4,-3,-1,0,1,2,3,4}

A\B={1,3,4}