Question

Розв'яжіть нерівність |x + 5| < 2​

Answer 1

$\displaystyle\bf\\|x+5| < 2\\\\\\\left \{ {{x+5 < 2} \atop {x+5 > -2}} \right. \\\\\\\left \{ {{x < 2-5} \atop {x > -2-5}} \right.\\\\\\\left \{ {{x < -3 \atop {x > -7}} \right. \\\\\\Otvet \ : \ x\in \ \Big(-7 \ ; \ -3\Big)$