Integrate 4x^3 + 6x^2 +4x + 3

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Each term is integrated according to the formula:

axb --> (a/(b+1))x(b+1)

A constant k integrates to kx 

Since this is indefinite integration, an additional term of +c must be added to the expression.

Therefore in this example, the expression integrates to:

x+ 2x3 + 2x2 +3x + c

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