document.write( "Question 613382: (r-3)(r+15)=-33 \n" ); document.write( "

Algebra.Com's Answer #386026 by stanbon(75887) $\"\"$ $\"About$

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(r-3)(r+15)=-33
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\n" ); document.write( "r^2+15r-3r-45 = -33
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\n" ); document.write( "r^2 + 12r -12 = 0
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\n" ); document.write( "r = [-12 +- sqrt(144-4*-12)]/2
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\n" ); document.write( "r = [-12 +- sqrt(192)]/2
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\n" ); document.write( "r = [-12 +- 8sqrt(3)]/2
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\n" ); document.write( "r = [-6+-4sqrt(3)]
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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