document.write( "Question 714726: x3+3x2+5x+15 \n" ); document.write( "

Algebra.Com's Answer #438948 by DrBeeee(684) $\"\"$ $\"About$

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Given:
\n" ); document.write( "(1) $\"x%5E3+%2B+3x%5E2+%2B+5x+%2B+15\"$
\n" ); document.write( "Now factor $\"x%5E2\"$ out of the first two terms and 5 out of the third and fourth terms to get
\n" ); document.write( "(2) $\"x%5E2%2A%28x%2B3%29+%2B+5%28x%2B3%29\"$
\n" ); document.write( "Now factor (x+3) out of (2) and get
\n" ); document.write( "(3) $\"%28x%2B3%29%2A%28x%5E2%2B5%29\"$
\n" ); document.write( "Set (3) equal to zero gives us the three roots
\n" ); document.write( "(4) x = (-3,+i $\"sqrt%285%29\"$ ,-i $\"sqrt%285%29\"$ ) \n" ); document.write( "

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