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May 30, 2015

Homework Help: algebra3

Posted by Joe on Tuesday, November 8, 2011 at 11:17pm.

Why isn't the absolute value inequality (x^2-1)</=8 set up as -8<x^2-1<8 yielding -7<x^2<9 so +/-sqrt-7<x<+/-sqrt9 so +/-isqrt7<x<+/-3?

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