You can
put this solution on YOUR website!(f/g)(x)=5x^2-8x/x^2-3x-40
= [x(5x-8)]/[(x-8)(x+5)]
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That is the factored form of the answer but it
doesn't do any good because there is no factor
shared by the numerator and denominator that
can be canceled.
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Cheers,
Stan H.