### Home > A2C > Chapter 11 > Lesson 11.3.1 > Problem11-129

11-129.

Complete the square to change the following equations to graphing form. Then sketch the graph of each equation.

1. $f\left(x\right) = x^{2} + 4x + 6$

How many ones do you need to make a perfect square? How many do you have?

$f\left(x\right) = \left(x + 2\right)^{2} + 2$

1. $x^{2} + 6x + y^{2} − 8y = 0$

See part (a).

$\left(x + 3\right)^{2} + \left(y − 4\right)^{2} = 25$
Remember to sketch the equation.