bycomparingtothetableaboveitlookslikethepartialfractiondecompositionmustlooklike
8x42x2+3×18=Ax+6+Bx3Notethatweâvegotdifferentcoefficientsforeachtermsincethereisnoreasontothinkthattheywillbethesame.Now
weneedtodeterminethevaluesofAandB.Thefirststepistoactuallyaddthetwotermsbackup.Thisisusuallysimplerthanitmightappeartobe.Recallthatwefirstneedtheleastcommondenominator
butweâvealreadygotthatfromtheoriginalrationalexpression.Inthiscaseitis
LCD=(x+6)(x3)©PaulDawkinsAlgebraâ310â