document.write( "Question 680507: HELP!! please i don't understand how to work this out.
\n" ); document.write( "write a polynomial function with rational coefficients so that P(x) = 0 has the given roots
\n" ); document.write( "-9 and -15
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Algebra.Com's Answer #422372 by ankor@dixie-net.com(22740)\"\" \"About 
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the given roots
\n" ); document.write( "-9 and -15
\n" ); document.write( ":
\n" ); document.write( "Find the two factors from the given roots:
\n" ); document.write( "x = -9
\n" ); document.write( "(x+9) = 0
\n" ); document.write( "and
\n" ); document.write( "x = -15
\n" ); document.write( "(x+15)
\n" ); document.write( "FOIL (x+9)(x+15) = x^2 + 15x + 9x + 135
\n" ); document.write( "which is
\n" ); document.write( "P(x) = x^2 + 24x + 135
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