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InterviewSolution
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If M^2+m^-2=23;then What Is The Value Of M^3+m^-3 ? |
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Answer»
=> (m + m^-1)^2 - 2 = 23 => (m + m^-1) = 5 m^3+m^-3 = (m + m^-1)^3 - 3(m + m^-1) = 5^3 - 3*5 = 110 m^2+m^-2=23 => (m + m^-1)^2 - 2 = 23 => (m + m^-1) = 5 m^3+m^-3 = (m + m^-1)^3 - 3(m + m^-1) = 5^3 - 3*5 = 110 |
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