document.write( "Question 437139: x2+81=0 \n" ); document.write( "

Algebra.Com's Answer #302352 by stanbon(75887) $\"\"$ $\"About$

You can put this solution on YOUR website!
x^2+81=0
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\n" ); document.write( "Factor:
\n" ); document.write( "(x+9i)(x-9i) = 0
\n" ); document.write( "x = -9i or x = +9i
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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