document.write( "Question 213525: I need help with this problem. It has me so confused. x^4-7x^3+18x-126=0 \n" ); document.write( "

Algebra.Com's Answer #161361 by math problem solving(30) $\"\"$ $\"About$

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To solve the equation, first factor the polynomial on the left side of the equation.\r
\n" ); document.write( "\n" ); document.write( " $\"x%5E4-7x%5E3%2B18x-126=0\"$
\n" ); document.write( " $\"%28x%5E4-7x%5E3%29%2B%2818x-126%29=0\"$ ..... grouping terms
\n" ); document.write( " $\"%28x%5E4-7x%5E3%29%2B%2818x-18%2A7%29=0\"$
\n" ); document.write( " $\"x%5E3%28x-7%29%2B18%28x-7%29=0\"$
\n" ); document.write( " $\"%28x-7%29%28x%5E3-18%29=0\"$
\n" ); document.write( "So $\"x+-+7+=+0\"$ or $\"x%5E3-18=0\"$
\n" ); document.write( "From x-7 = 0 we have x = 7
\n" ); document.write( "From $\"x%5E3-18=0\"$ we have x=18^(1/3)\r
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