Question

Calcule $2.\sqrt{25} - \sqrt{ \frac{9}{4} }$

Answer 1

$2. \sqrt{25} - \sqrt{ \frac{9}{4} } \to \\\\ 2.5- \frac{3}{2} \to \\\\ 10- \frac{3}{2} \to \\\\ mmc=2\\\\ \frac{20-3}{2} \to \\\\ \frac{17}{2} \\\\ou \\\\ 8,5$