rainbowowlkitte rainbowowlkitte

04-11-2019
Mathematics

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please help, ik it looks easy but i cant do it, ill give brainliest

please help ik it looks easy but i cant do it ill give brainliest class=

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surjithayer10otahza surjithayer10otahza

04-11-2019

Answer:

Step-by-step explanation:

[tex](m+\frac{1}{m})=3\\cubing both sides\\(m+\frac{1}[m})^{3} =3^{3} \\m^3+\frac{1}{m^3}+3 m*\frac{1}{m}(m+\frac{1}{m})=27\\m^3+\frac{1}{m^3}+3*3=27\\m^3+\frac{1}{m^3}=27-9=18[/tex]

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