document.write( "Question 183847: x^3 + 2x^2 - x -2 = 0 \n" ); document.write( "

Algebra.Com's Answer #137945 by Earlsdon(6294) $\"\"$ $\"About$

You can put this solution on YOUR website!
Solve for x:
\n" ); document.write( " $\"x%5E3%2B2x%5E2-x-2+=+0\"$ Factor the left side.
\n" ); document.write( " $\"%28x%5E2-1%29%28x%2B2%29+=+0\"$ Apply the zero product rule:
\n" ); document.write( " $\"x%5E2-1+=+0\"$ or $\"x-2+=+0\"$ so...
\n" ); document.write( " $\"x%5E2-1+=+0\"$ Add 1 to both sides.
\n" ); document.write( " $\"x%5E2+=+1\"$ Take the square root of both sides.
\n" ); document.write( " $\"x+=+1\"$ or $\"x+=+-1\"$ and...
\n" ); document.write( " $\"x%2B2+=+0\"$ Subtract 2 from both sides.
\n" ); document.write( " $\"x+=+-2\"$
\n" ); document.write( "The solutions:
\n" ); document.write( " $\"highlight%28x+=+1%29\"$
\n" ); document.write( " $\"highlight%28x+=+-1%29\"$
\n" ); document.write( " $\"highlight%28x+=+-2%29\"$ \r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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