Math, asked by elangovanpongaiyan, 9 months ago


please let me know the answer with explanation.

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Answered by Cynefin
17

 \huge{ \mathrm{ \star{ \underline{ \underline{ \red{Question...}}}}}}

 \large{ \mathrm{find \:   \sqrt[3]{25 \sqrt[3]{25 \sqrt[3]{25.....} } } }}

 \huge{ \star{ \underline{ \underline{ \red{ \mathrm{Answer...}}}}}}

  : \large{ \mathrm{ \:  \: option \: (a) \:  \:  5}}

 \huge{ \mathrm{ \star{ \underline{ \underline{ \red{Solution...}}}}}}

  : \large{ \mathrm{ \purple{let \: x =  \sqrt[3]{25 \sqrt[3]{25 \sqrt[3]{25....} } } }}} \\  \\   :  \large{ \mathrm{ \implies{ {x}^{3}  = 25   \: \underbrace{\sqrt[3]{25 \sqrt[3]{25....}  } }}}} \\  \large{ \mathrm{ \red{ \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: \:  \:  \:  \:  \:  x}}} \\  : \large{ \mathrm{ \implies{ {x}^{3}  = 25x}}} \\  \\ :  \large{ \mathrm{ \implies{ \frac{ \cancel{ {x}^{3}} \:  \:  {x}^{2}  }{ \cancel{x}}  = 25}}} \\  \\  :  \large{ \mathrm{ \implies{ \red{ \boxed{x = 5}}}}}

 \large{ \mathrm{ \therefore{ \green{ \underline{ \underline{required \: answer \: is \: 5}}}}}}

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