document.write( "Question 359316: I have a value on absolute value equations! Why in some problems you get the same answer: for example x= 8 and x= -8, and in other problems you get two different answers: for example x= 3 and x= 7? Also, how do you know in which problems if you will get the same answer or if you will get different answers? \n" ); document.write( "
Algebra.Com's Answer #256420 by checkley77(12844)\"\" \"About 
You can put this solution on YOUR website!
Examples:
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\n" ); document.write( "X^2-9=0
\n" ); document.write( "(X+3)(X-3)=0
\n" ); document.write( "X+3=0
\n" ); document.write( "X=-3 ANS.
\n" ); document.write( "X-3=0
\n" ); document.write( "X=3 ANS.
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\n" ); document.write( "X^2+4X-21=0
\n" ); document.write( "(X+7)(X-3)=0
\n" ); document.write( "X+7=0
\n" ); document.write( "X=-7 ANS.
\n" ); document.write( "X-3=0
\n" ); document.write( "X=3 ANS.
\n" ); document.write( "
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