Question

решите пожалуйста пример!​

Answer 1

$1)\sqrt{10^{2}-4*3^{2} } =\sqrt{100-4*9}=\sqrt{100-36}=\sqrt{64}=8\\2)\sqrt{0,5^{2}-0,4^{2} } =\sqrt{(\frac{1}{2})^{2}-(\frac{2}{5})^{2} } =\sqrt{\frac{1}{4}-\frac{4}{25} } =\sqrt{\frac{9}{100} }=\frac{3}{10}$