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posted by shelia on Monday, January 25, 2010 at 10:04pm.

12u^2x^8z^7+15u^3x^8=

12 u^2 x^8 z^7 + 15 u^3 x^8 common factors 3 u^2 x^8 so 3 u^2 x^8 ( 4 z^7 + 5 u)

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