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Popular Calculus >

integral of (2x+1)2

Solution

\int (2 x + 1) 2 d x

Solution

2 (x^{2} + x) + C

Solution steps

\int (2 x + 1) \cdot 2 d x

Take the constant out:

\int a \cdot f (x) d x = a \cdot \int f (x) d x

= 2 \cdot \int 2 x + 1 d x

Apply the Sum Rule:

\int f (x) \pm g (x) d x = \int f (x) d x \pm \int g (x) d x

= 2 (\int 2 x d x + \int 1 d x)

\int 2 x d x = x^{2}

\int 1 d x = x

= 2 (x^{2} + x)

Add a constant to the solution

= 2 (x^{2} + x) + C

Graph

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Frequently Asked Questions (FAQ)

What is the integral of (2x+1)2 ?
The integral of (2x+1)2 is 2(x^2+x)+C