Help! How to make an extraneous equation? I need to make an equation that when substituted into it's original equation, doesn't equal the original answer (I hope that makes sense) and the equation I made is non extraneous. My equation was the square root of (x+9) plus 2 = 20. But, it was non extraneous.
Stacey Warren - Expert brainly.com
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That worked, thanks!
to be sure, is the solution x=-7?
and when I tried to see if it was extraneous, I got 4=-1