Question

Помогите!!!!!!!!!!!!!срочно!!!!!! ​

Answer 1

$\sqrt{-4(b-\frac{1}{14} )} =\sqrt{-4b+\frac{4}{14} } =\sqrt{-4b+\frac{2}{7} } \\\\-4b+\frac{2}{7} \geq 0\\\\-4b\geq -\frac{2}{7} |:(-4)\\\\b\leq \frac{2}{28}\\ \\b\leq \frac{1}{14}$