document.write( "Question 180325This question is from textbook sullivan
\n" ); document.write( ": need to find all the real zeros of each polynomial function. using the zeros to factor f over the real numbers f(x)= 3x3+6x2-15x-30 \n" ); document.write( "

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3x3+6x2-15x-30
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\n" ); document.write( " $\"3%28x%5E3%2B2x%5E2-5x-10%29\"$
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\n" ); document.write( "we know that possible roots are plus and minus 1,2,5,and 10
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\n" ); document.write( "I found +2 is a root
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\n" ); document.write( ":
\n" ); document.write( "so we have $\"3%28x%2B2%29%28x%5E2-5%29\"$
\n" ); document.write( ":
\n" ); document.write( " $\"3%28x%2B2%29%28x%2Bsqrt%285%29%29%28x-sqrt%285%29%29\"$
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\n" ); document.write( "roots: $\"sytem%28-2%2Csqrt%285%29%2C-sqrt%285%29%29\"$ \n" ); document.write( "

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