Question

Giải giúp em với

Answer 1

\(A=\left\{1;\sqrt{3};-\sqrt{3}\right\}\)

\(B=\left\{2;1;7\right\}\)

\(A\cap B=\left\{1\right\}\)

\(A\cup B=\left\{1;\sqrt{3};-\sqrt{3};2;7\right\}\)

A\B=\(\left\{\sqrt{3};-\sqrt{3}\right\}\)

B\A={2;7}