document.write( "Question 324078: Solve by using the quadratic formula. Show complete solutions.
\n" ); document.write( "3x (3x + 4) = -4 \n" ); document.write( "

Algebra.Com's Answer #231961 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"3x%283x+%2B+4%29+=++-4\"$
\n" ); document.write( " $\"9x%5E2%2B12x=-4\"$
\n" ); document.write( " $\"9x%5E2%2B12x%2B4=0\"$
\n" ); document.write( " $\"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"$
\n" ); document.write( " $\"x+=+%28-12+%2B-+sqrt%28+12%5E2-4%2A9%2A4+%29%29%2F%282%2A9%29+\"$
\n" ); document.write( " $\"x+=+%28-12+%2B-+sqrt%28+144-144+%29%29%2F%2818%29+\"$
\n" ); document.write( " $\"x+=+%28-12+%2B-+sqrt%28+0+%29%29%2F%2818%29+\"$
\n" ); document.write( " $\"x+=+-12%2F18+\"$
\n" ); document.write( " $\"x=-2%2F3\"$
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