document.write( "Question 148824This question is from textbook Elementary and Intermediate Algebra
\n" ); document.write( ": Factor each polynomial. If the polynomial is prime, say so
\n" ); document.write( " 18z + 45 + z²
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Algebra.Com's Answer #109160 by stanbon(75887) $\"\"$ $\"About$

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Factor each polynomial. If the polynomial is prime, say so
\n" ); document.write( "18z + 45 + z²
\n" ); document.write( "------------------
\n" ); document.write( "Rearrange:
\n" ); document.write( "z^2 + 18z + 45
\n" ); document.write( "Using the AC Method of factoring:
\n" ); document.write( "Think of two numbers whose product is 45 and whose sum is 18
\n" ); document.write( "The numbers are 15 and 3
\n" ); document.write( "Rewrite the problem:
\n" ); document.write( "z^2 + 15z + 3z + 45
\n" ); document.write( "Factor the 1st two and the last two terms separately
\n" ); document.write( "z(z+15) + 3(z+15)
\n" ); document.write( "Factor again:
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\n" ); document.write( "(z+15)(z+3)
\n" ); document.write( "=================
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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