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ICSE Class 9 Answered

What is the cube root of 2^1/3 - 1?
Asked by bjayanta | 05 Jun, 2015, 02:19: PM
answered-by-expert Expert Answer
2 to the power of 1 divided by 3 end exponent minus 1 equals open parentheses 2 to the power of 1 divided by 9 end exponent close parentheses cubed minus 1 cubed equals open parentheses 2 to the power of 1 divided by 9 end exponent minus 1 close parentheses open parentheses 2 to the power of 2 divided by 9 end exponent plus 2 to the power of 1 divided by 9 end exponent plus 1 close parentheses H e n c e comma space cube root of 2 to the power of 1 divided by 3 end exponent minus 1 end root equals cube root of open parentheses 2 to the power of 1 divided by 9 end exponent minus 1 close parentheses open parentheses 2 to the power of 2 divided by 9 end exponent plus 2 to the power of 1 divided by 9 end exponent plus 1 close parentheses end root equals cube root of open parentheses 2 to the power of 1 divided by 9 end exponent minus 1 close parentheses end root cross times cube root of open parentheses 2 to the power of 2 divided by 9 end exponent plus 2 to the power of 1 divided by 9 end exponent plus 1 close parentheses end root
Answered by satyajit samal | 07 Jun, 2015, 06:51: PM

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