document.write( "Question 318002: 4x^3+x^2-36x-9=0 \n" ); document.write( "

Algebra.Com's Answer #227697 by Earlsdon(6294) $\"\"$ $\"About$

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Solve for x???
\n" ); document.write( " $\"4x%5E3%2Bx%5E2-36x-9+=+0\"$ Factor by grouping.
\n" ); document.write( " $\"%284x%5E3%2Bx%5E2%29-%2836x%2B9%29+=+0\"$
\n" ); document.write( " $\"x%5E2%284x%2B1%29-9%284x%2B1%29+=+0\"$ Factor (4x+1)
\n" ); document.write( " $\"%284x%2B1%29%28x%5E2-9%29+=+0\"$ Factor the second binomial.
\n" ); document.write( " $\"%284x%2B1%29%28x%2B3%29%28x-3%29+=+0\"$ Apply the zero product rule.
\n" ); document.write( " $\"4x%2B1+=+0\"$ or $\"x%2B3+=+0\"$ or $\"x-3+=+0\"$ so...
\n" ); document.write( " $\"x+=+-1%2F4\"$
\n" ); document.write( " $\"x+=+-3\"$
\n" ); document.write( " $\"x+=+3\"$ \n" ); document.write( "

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