Question

Fie multimea: A={×€£|3×+4|<12} va rog

Answer 1

-12 < 3x+4 < 12
-16 < 3x < 8
$-\frac{16}{3}$ < x < $\frac{8}{3}$
⇒ x ∈ ( $-\frac{16}{3}$ ; $\frac{8}{3}$ ) ⇒ A = ( $-\frac{16}{3}$ ; $\frac{8}{3}$ ) intersectat cu multimea ta