document.write( "Question 313951: 3x2 +18x + 21= x(x + 5) \n" ); document.write( "

Algebra.Com's Answer #224442 by checkley77(12844) $\"\"$ $\"About$

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3x^2 +18x + 21= x(x + 5)
\n" ); document.write( "3x^2+18x+21=x^2+5x
\n" ); document.write( "3x^2-x^2+18x-5x+21=0
\n" ); document.write( "2x^2+13x+21=0
\n" ); document.write( "(2x+7)(x+3)=0
\n" ); document.write( "2x+7=0
\n" ); document.write( "2x=-7
\n" ); document.write( "x=-3.5 ans.
\n" ); document.write( "x+3=0
\n" ); document.write( "x=-3 ans. \n" ); document.write( "

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