factor out a factor with a negative coefficient. then factor out a factor with a positive coefficient.
First use a common factor with a POSITIVE COEFFICIENT, and then use a
common factor with a NEGATIVE COEFFICIENT. let us use -4x^4+8x^3-20x as our example here. first factor with +4 then with -4.
for the negative case it would be -4 giving you
please best me. welcome
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