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Posted by christina on Tuesday, September 4, 2007 at 9:58pm.

how do u factor these polynomials~ 5x^2 - 5x-60 81-x^4 18a^2b-50b

(5x-20)(x+3) -(x^2-9)(x^2+9) Then are you sure the third one is written right? 18a^2b- is a to the 2b or is b something else

its A squared b

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