document.write( "Question 83713: Solve by Factoring: 3x^2 = -9x \r
\n" ); document.write( "\n" ); document.write( "What are the solutions for x?
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Algebra.Com's Answer #60192 by funmath(2933) $\"\"$ $\"About$

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Solve by Factoring: 3x^2 = -9x \r
\n" ); document.write( "\n" ); document.write( "What are the solutions for x?
\n" ); document.write( " $\"3x%5E2=-9x\"$
\n" ); document.write( " $\"3x%5E3%2B9x=-9x%2B9x\"$
\n" ); document.write( " $\"3x%5E2%2B9x=0\"$
\n" ); document.write( " $\"3x%28x%2B3%29=0\"$
\n" ); document.write( "3x=0 or x+3=0
\n" ); document.write( "3x/3=0/3 or x+3-3=0-3
\n" ); document.write( "x=0 or x=-3
\n" ); document.write( ":
\n" ); document.write( "Proof:
\n" ); document.write( "if x=0
\n" ); document.write( "3(0)^2=-9(0)
\n" ); document.write( "0=0 True
\n" ); document.write( "if x=-3
\n" ); document.write( "3(-3)^2=-9(-3)
\n" ); document.write( "3(9)=-9(-3)
\n" ); document.write( "27=27 True
\n" ); document.write( "We're Right!!!
\n" ); document.write( "Happy Calculating!!! \n" ); document.write( "

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