Answer :

Let


Putting


Which implies,


A(x+1)+B(x-2)=2x+5


Now put x+1=0


Therefore, x=-1


A(0)+B(-1-2)=3


B=-1


Now put x-2=0


Therefore, x=2


A(2+1)+B(0)=2×2+5=9


A=3


Now From equation (1) we get,





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