“So when it’s subtraction, you change the sign of the second one?”
(subtracting fractions with polynomials and factors … so we’ve got something on this fraction minus …. x -4 on the other.)
call me picky, but … I walked through and drew why actually, you’re multiplying *both* terms by that negative one.
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Resource Room Dot Net Blog 
Posted on October 22, 2013
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