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Question

Integrate the function.
x2+4x5dx.

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Solution

Let I=x2+4x522+22dx=(x+2)254dx
=(x+2)2(3)2dxI=x+22x2+4x592log|(x+2)+x2+4x5|+C[(x2a2)dx=x2x2a2a22log|x+x2a2|]


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