Integrate x((x^2)+2) dx

The first step is to multiply out the brackets so the function is in a form that can be integrated. X x X2 = X3 then X x 2 is simply 2X. So we are left with X3 + 2X. Both parts of this function can be integrated normally by rising the power by one and then dividing the coefficient by the new power. So 3+1=4 then divide the coefficient (1) by  4 gives us 1/4(X4) . Doing the same with 2X gives us x2. We can differentiate this two parts to double check we have integrated properly. The last step is to add a constant i.e. +C, as no limits were given in the question,

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Answered by Benjamin H. Maths tutor

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