Long description

Start fraction start fraction 4 minus x squared over x squared minus 3 x + 2 end fraction, over, start fraction x + 2 over x squared minus 9 end fraction end fraction = start fraction 4 minus x squared over x squared minus 3 x + 2 multiplied by invert, start fraction x squared minus 9 over x pus 2 end fraction = start fraction left parenthesis 2 minus x right parenthesis left parenthesis 2 + x right parenthesis left parenthesis x minus 3 right parenthesis left parenthesis x + 3 right parenthesis over left parenthesis x minus 2 right parenthesis left parenthesis x minus 1 right parenthesis left parenthesis x + 2 right parenthesis end fraction. Replace left parenthesis 2 minus x right parenthesis with minus left parenthesis x minus ...

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