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8/125x^3 + 64y^6

i tried doinhg this but i still don't get it..pls help me...

  • math -

    Read the question as:
    8/125x^3 + 64y^6
    =(2x/5)³+(2y²)³

    You will need the standard identity:
    a^3+b^3=(a+b)(a^2-ab+b^2)

    Give it another try.

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