Final answer:
To isolate x in the equation (x+4)² + y² = 22, you can expand the square and rearrange the equation.
Step-by-step explanation:
To isolate a variable in an equation, you want to perform operations that will move all the terms involving that variable to one side of the equation. In this case, the variable we want to isolate is x. To isolate x in the equation (x+4)² + y² = 22, you can start by expanding (x+4)² using the formula (a+b)² = a² + 2ab + b². This gives you x² + 8x + 16 + y² = 22. Then, you can rearrange the equation to isolate x by subtracting 8x and 16 from both sides: x² - 8x + y² = 6.
Learn more about isolation of variables