document.write( "Question 369799: Solve by factoring and using the principle of zero products:
\n" ); document.write( "x^2+4x-21=0
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Algebra.Com's Answer #263519 by Alan3354(69443)\"\" \"About 
You can put this solution on YOUR website!
Hint:
\n" ); document.write( "factor 21
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