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Lv 5
? asked in Science & MathematicsMathematics · 9 years ago

Solve this equation please?

Find the value of x.

x^-3=2(36-x)^-3

Cheers.

4 Answers

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  • 9 years ago
    Favorite Answer

    67_ 16

  • Anonymous
    9 years ago

    16

  • Melvyn
    Lv 7
    9 years ago

    1/ x^3 =2 / (36-x)^3

    (36-x)^3=2x^3

    2x^3 -(36-x)^3=0

    (Cbrt[2] x - (36-x)) is a factor from difference of 2 cubes formula

    (Cbrt [2] x -36 +x ) is a factor

    x(Cbrt[2]+1)-36=0

    x= 36/(Cbrt[2]+1)

  • 9 years ago

    am too lazy to answer it ..here take it

    http://www.wolframalpha.com/input/?i=x^-3%3D2%2836...

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