помогите, я тему пропустил, теперь не знаю что делать
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Ответил mmb1
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а.![sqrt[5]{ csqrt[4]{c} } * sqrt[5]{ c^{-1} } = sqrt[5]{ sqrt[4]{c* c^{4} } } * sqrt[20]{ ( c^{-1} )^{5} } = sqrt[20]{ c^{5} } * sqrt[20]{ c^{-5} } = sqrt[20]{ c^{5-5} } = sqrt[20]{1} =1](https://tex.z-dn.net/?f=+sqrt%5B5%5D%7B+csqrt%5B4%5D%7Bc%7D+%7D+%2A+sqrt%5B5%5D%7B+c%5E%7B-1%7D+%7D+%3D+sqrt%5B5%5D%7B+sqrt%5B4%5D%7Bc%2A+c%5E%7B4%7D+%7D+%7D+%2A++sqrt%5B20%5D%7B+%28+c%5E%7B-1%7D+%29%5E%7B5%7D+%7D+%3D+sqrt%5B20%5D%7B+c%5E%7B5%7D+%7D+%2A+sqrt%5B20%5D%7B+c%5E%7B-5%7D+%7D+%3D++sqrt%5B20%5D%7B+c%5E%7B5-5%7D+%7D+%3D++sqrt%5B20%5D%7B1%7D+%3D1 "sqrt[5]{ csqrt[4]{c} } * sqrt[5]{ c^{-1} } = sqrt[5]{ sqrt[4]{c* c^{4} } } * sqrt[20]{ ( c^{-1} )^{5} } = sqrt[20]{ c^{5} } * sqrt[20]{ c^{-5} } = sqrt[20]{ c^{5-5} } = sqrt[20]{1} =1")
б![(sqrt[3]{ x^{2} } -4)/( sqrt[3]{x}-2 ) - sqrt[3]{x} =(sqrt[3]{x}-2)( sqrt[3]{x}+2 )/(sqrt[3]{x}-2) - sqrt[3]{x} = sqrt[3]{x}+2-sqrt[3]{x} = 2](https://tex.z-dn.net/?f=+%28sqrt%5B3%5D%7B+x%5E%7B2%7D+%7D+-4%29%2F%28+sqrt%5B3%5D%7Bx%7D-2+%29+-++sqrt%5B3%5D%7Bx%7D+%3D%28sqrt%5B3%5D%7Bx%7D-2%29%28+sqrt%5B3%5D%7Bx%7D%2B2+%29%2F%28sqrt%5B3%5D%7Bx%7D-2%29+-++sqrt%5B3%5D%7Bx%7D+%3D+sqrt%5B3%5D%7Bx%7D%2B2-sqrt%5B3%5D%7Bx%7D+%3D+2+ "(sqrt[3]{ x^{2} } -4)/( sqrt[3]{x}-2 ) - sqrt[3]{x} =(sqrt[3]{x}-2)( sqrt[3]{x}+2 )/(sqrt[3]{x}-2) - sqrt[3]{x} = sqrt[3]{x}+2-sqrt[3]{x} = 2")
2![6/ sqrt[3]{9} =(6* sqrt[3]{3}) / (sqrt[3]{ 3^{2} } * sqrt[3]{3}) = 6 sqrt[3]{3}/3=2 sqrt[3]{3}](https://tex.z-dn.net/?f=6%2F+sqrt%5B3%5D%7B9%7D+%3D%286%2A+sqrt%5B3%5D%7B3%7D%29+%2F+%28sqrt%5B3%5D%7B+3%5E%7B2%7D+%7D+%2A+sqrt%5B3%5D%7B3%7D%29+%3D+6++sqrt%5B3%5D%7B3%7D%2F3%3D2+sqrt%5B3%5D%7B3%7D+++ "6/ sqrt[3]{9} =(6* sqrt[3]{3}) / (sqrt[3]{ 3^{2} } * sqrt[3]{3}) = 6 sqrt[3]{3}/3=2 sqrt[3]{3}")
б
2
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