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how do you know if your anwser in absolut value is extranious after you plug it back into the equation?
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how do you know if your anwser in absolut value is extranious after you plug it back into the equation?

User MrRed
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If an number is an absolute value, it means that the number will be positive. You would plug and check the same way you would for any other equation and it a solution is considered extraneous if the equation is not equal
User Jacob Lockard
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