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5 February, 20:59

What is the product of (y+3) (y^2-3y+9)

y3 + 27

y3 - 27

y3 - 6y2 + 27

y3 + 6y2 + 27

+1
Answers (1)
  1. 5 February, 21:19
    0
    (y+3) (y^2-3y+9)

    =y (y^2-3y+9)

    +3 (y^2-3y+9)

    = (y^3-3y^2+9y) + (3y^2-9y+27)

    =y^3-3y^2+9y+3y^2-9y+27

    =y^3+27
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