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14 June, 17:40

Multiply-- - (5d-4y) ^2

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Answers (2)
  1. 14 June, 18:28
    0
    (5d-4y) ^2

    many make tehmistake and do this:

    25d^2 - 16y^2

    THIS IS WRONG

    you must FOIL

    (5d-4y) (5d-4y)

    25d^2 - 20dy - 20dy + 16 y^2

    25d^2 - 40dy + 16 y^2
  2. 14 June, 20:50
    0
    25d^2-40dy+16y^2
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