Question

ex 1,dau 30 puncte. ​

Answer 1

Răspuns:

A ∪ B = {-$-\sqrt{2}; 5; \frac{3}{4}; 2,(3); \sqrt{3,1} , -\frac{2}{9}$}

A ∩ B = {$5; 2,(3)$}

A \ B = {$-\sqrt{2} ; \frac{3}{4}$}

B \ A = {$\sqrt{3,1} ; -\frac{2}{9}$}