document.write( "Question 219430: The square of a negative number is fifteen more than twice the negative number. Find the number \n" ); document.write( "
Algebra.Com's Answer #165151 by ankor@dixie-net.com(22740)\"\" \"About 
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The square of a negative number is fifteen more than twice the negative number.
\n" ); document.write( " Find the number
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\n" ); document.write( "Let x = \"the number\"
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\n" ); document.write( "(x)^2 = 2(x) + 15
\n" ); document.write( "x^2 = 2x + 15
\n" ); document.write( "x^2 - 2x - 15 = 0
\n" ); document.write( "Factor
\n" ); document.write( "(x-5)(x+3) = 0
\n" ); document.write( "x = 5
\n" ); document.write( "and
\n" ); document.write( "x = -3, the negative solution is what they want
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\n" ); document.write( "Check solution
\n" ); document.write( "(-3)^2 = 2(-3) + 15
\n" ); document.write( "9 - 6 = 15 \n" ); document.write( "
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