Find the product of

Mathematics
Tutor: None Selected Time limit: 1 Day

Question 1      (x + 9) (x -9)

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

                3      (x-2)^3

           4      (x + 3y)^3

           5      (7k + 1)^3

May 12th, 2015

  (x + 9) (x -9) = x^2 -81

 (9y^2 - 2) (9y^2 + 2) = 81y^4 -4

 (x-2)^3 = (x-2) (x^2 +2x+4)

(x + 3y)^3 = (x + 3y) (x^2 -3xy+9y^2)

  (7k + 1)^3 = (7k + 1) (49k^2 -7k+1)

Please let me know if you have any questions and best me if you are satisfactory.


May 12th, 2015

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