document.write( "Question 10270: solve 3x³-4x-1\r
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Algebra.Com's Answer #5410 by khwang(438) $\"\"$ $\"About$

You can put this solution on YOUR website!
This is cubic equation not quadratic
\n" ); document.write( " 3x³-4x-1 = 0 (missing = 0)
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\n" ); document.write( " Factor theleft hand side:
\n" ); document.write( " 3x³-4x-1 = 3x³- 3x- x - 1
\n" ); document.write( " = 3x $\"%28x%5E2-1%29\"$ -(x+1)
\n" ); document.write( " = 3x(x+1)(x-1) - (x+1)
\n" ); document.write( " = (x+1) $\"%283x%5E2-3x-1%29\"$ \r
\n" ); document.write( "\n" ); document.write( " One root is -1 then get another two roots by using quadratic formula.\r
\n" ); document.write( "\n" ); document.write( " Or use synthtic division as
\n" ); document.write( " 3 + 0-4 -1 (-1
\n" ); document.write( " -3 +3 +1
\n" ); document.write( " -----------
\n" ); document.write( " 3 -3 -1 +0\r
\n" ); document.write( "\n" ); document.write( " Kenny\r
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