Question

помогите решить пожалуйста

Answer 1

Ответ:

$1) \sqrt{ 3.24 \times 900} = \sqrt{2916} = 54 \\ 2) \sqrt{8} \times \sqrt{800} = \sqrt{6400} = 80 \\ 3) \frac{ \sqrt{8} }{ \sqrt{50} } = \frac{ \sqrt{4} }{ \sqrt{25} } = \frac{2}{5} = 0.4 \\ 4) \sqrt{490} \times \sqrt{40} = \sqrt{19600} = 140 \\ 5) \sqrt{98} \times \sqrt{49} \times \sqrt{2} = 7 \sqrt{2} \times 7 \sqrt{2} = 7 \times 2 \times 7 = 98 \\ 6) \sqrt{6.4} \times \sqrt{16.9} = \sqrt{108.16} = \sqrt{ \frac{2704}{25} } = \frac{52}{5} = 10.4 \\ 7) \sqrt{25 {}^{2} - 24 {}^{2} } = \sqrt{(25 - 24)(25 + 24)} = \sqrt{49} = 7 \\ 8) \frac{ \sqrt{8} }{ \sqrt{162} } = \frac{ \sqrt{4} }{ \sqrt{81} } = \frac{2}{9} \\ 9) \sqrt{12 \frac{1}{10} } \times \sqrt{10} = \sqrt{ \frac{121}{10} \times 10 } = \sqrt{121} = 11 \\ 10) \sqrt{7.2 \times 10.8 \times 6} = \sqrt{466.56} = \sqrt{ \frac{11664}{25} } = \frac{108}{5} = 21.6$

Answer 2

Ответ:

$1)\;\;\sqrt{3.24*900} = 1.8*30 = 54\\\\2)\;\;\sqrt{8}*\sqrt{800} = \sqrt{6400} = 80\\\\3)\;\;\frac{\sqrt{8}}{\sqrt{50}} = \sqrt{0.16} =0.4\\\\4)\;\;\sqrt{490}*\sqrt{40}=\sqrt{19600}=140\\\\5)\;\;\sqrt{98}*\sqrt{49}*\sqrt{2} =\sqrt{196}*\sqrt{49}=14*7=98\\\\6)\;\;\sqrt{6.4}*\sqrt{16.9}=\sqrt{108.16}=10.4\\\\7)\;\;\sqrt{25^2-24^2}=\sqrt{625-576}=\sqrt{49}=7\\\\8)\;\;\frac{\sqrt{8}}{\sqrt{162}}=\frac{\sqrt{4}}{\sqrt{81}}=\frac{2}{9}$

$9)\;\;\sqrt{12\frac{1}{10}}*\sqrt{10}=\sqrt{12.1*10}=\sqrt{121}=11\\\\10)\;\;\sqrt{7.2*10.8*6} = \sqrt{466.56}=21.6$