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12 September, 21:36


Factorise it

Answers (1)
  1. 12 September, 21:56
    Step-by-step explanation:

    First pull out the common factor of ab

    ab (8a^3 + (1/125) b^3)

    This is basically the sum of cubes. The linear factor is

    (2a + 1/5 b)

    The other factor is these two factors squared and their multiplicand subtracted.

    (2a^2 - 2/5 ab + 1/25b^2)

    Now put all this together and you get

    ab (2a + 1/5 b) ((2a^2 - 2/5 ab + 1/25b^2)
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