Answer :


Let,



x+3 = A(-4-2x)+B


x+3 = -2Ax-4A+B


Equating the coefficient, we get


-2A=1 and -4A+B =3






Let


And



Now ,


Let 3-4x-x2= t


-4-2x dx= -(4+2x)dx =dt




Again ,






Thus,





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