3/2√20*√5 помогите))

1. [latex] \frac{3}{2 \sqrt{20} } * \sqrt{5} = \frac{3* \sqrt{5} }{2* \sqrt{20} } = \frac{3}{2}* \sqrt{ \frac{5}{20} } = \frac{3}{2} * \sqrt{ \frac{1}{4} } = \frac{3}{2}* \frac{1}{2} = \frac{3}{4} =0,75[/latex] 2.  [latex] \frac{3}{2 \sqrt{20}* \sqrt{5} } = \frac{3}{2* \sqrt{20*5} } = \frac{3}{2* \sqrt{100} } = \frac{3}{2*10} =0,15[/latex]