Question

the solution set of
${x}^{2} \leqslant 9$
​

Answer 1

SOLUTION :

$\sf \: {x}^{2} \leqslant 9$

$\sf \to \: x \leqslant ±3$

Hance,

$\sf \: x \in \: ( - \infty , - 3] U \: (- \infty ,3]$

$\sf \implies \: x \in \: ( - \infty ,3]$