Tuesday
May 26, 2015

Homework Help: pre calc

Posted by Anonymous on Tuesday, September 8, 2009 at 2:45pm.

True or false:
a. |3x-5|=|2x+4| if and only if 3x-5=2x+4 or 3x-5= -(2x+4) ______
b. |2x+7|=-4 if and only if 2x+7=4 or 2x+7=-4 ______

how do you do these and what's the answer?
thanks

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