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x+1/x^2+7x+12 * x+4/x+1

Sagot :

Factor the two equations then, Multiply  7 x ^3 + 12 x^ 2 + x + 1/ x ^2  and   x + 4 /x + 1  

you get:( 7 x ^3 + 12 x ^2 + x + 1 ) ( x + 4 )/ x^ 2 ( x + 1 )