Example: you work on an equation and come up with two roots (where it equals zero): "a" and "b". When you put "a" into the original equation it becomes zero, but when you put in "b" it doesn't. So "b" is an extraneous root. This often happens when we square both sides during our solution
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Answer:
Example: you work on an equation and come up with two roots (where it equals zero): "a" and "b". When you put "a" into the original equation it becomes zero, but when you put in "b" it doesn't. So "b" is an extraneous root. This often happens when we square both sides during our solution