1.

If M^2+m^-2=23;then What Is The Value Of M^3+m^-3?

Answer»

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.

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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