Question

вычислите ( +решение)
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Answer 1

$1)\sqrt{0,25*1\frac{7}{9}}=\sqrt{\frac{1}{4}*\frac{16}{9}}=\sqrt{\frac{4}{9}}=\frac{2}{3}\\\\2)\sqrt{2\frac{14}{25} *10\frac{9}{16}}=\sqrt{\frac{64}{25}*\frac{169}{16}}=\frac{8}{5}*\frac{13}{16}=\frac{13}{10}=1,3$

$3)\sqrt{5\frac{1}{16}}(\sqrt{80}-\sqrt{125})=\sqrt{\frac{81}{16}}(\sqrt{16*5}-\sqrt{25*5})=\frac{9}{4}*(4\sqrt{5}-5\sqrt{5})=\frac{9}{4}*(-\sqrt{5})=-2,25\sqrt{5}$