Question

38 pls iau 2
va roogggg​

Answer 1

Explicație pas cu pas:

$\overline {31x} \ \ \vdots \ \ 4 \implies \overline {1x} \ \ \vdots \ \ 4 \implies x \in \{2; 6 \}$

$\implies A = \{2; 6 \}$

$x + 4 = 6 \implies x = 2$

${x}^{2} = 36 \iff {x}^{2} = {6}^{2} \implies x = 6$

$\implies B = \{2; 6 \}$

$\implies A = B$

q.e.d.