divine5 divine5
  • 07-05-2017
  • Mathematics
contestada

How to compute and simplify

How to compute and simplify class=

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Аноним Аноним
  • 08-05-2017
a)  9ab/3a+b    /   a^2 - 6a/ a^2 - 4a -12 

=  9a^3b - 36a^2b - 108ab  /  3a^3 + a^2b - 18a^2 - 6ab

=  9a^2b - 36ab - 108b / 3a^2 + ab - 18a -6b 

b)  x^2 - 2xy - 3y^2/ x^2 - 9y^2     /   2x^2 - xy/ 2x^2+ xy- y^2

 =   2x^4 - 3x^3y - 9x^2y^2 - xy^3 + 3y^4  / 
2x^4 - x^3y - 18x^2y^2 + 9xy^3

3)

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