Completing the Square

Rarely Tested

Completing the Square

A quadratic:

$$ax^2+bx+c$$

can be written as:

$$a\left(x+\frac{b}{2a}\right)^2+\frac{4ac-b^2}{4a}$$

Usage

- Used to transform quadratic denominators into standard forms involving inverse trigonometric or logarithmic integrals.

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