document.write( "Question 163991: Find all real or imaginary solutions to the following equation, b^4+13b^2+36=0 \n" ); document.write( "
Algebra.Com's Answer #120823 by stanbon(75887)\"\" \"About 
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b^4+13b^2+36=0
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\n" ); document.write( "Factor to get:
\n" ); document.write( "(b^2+4)(b^2+9) = 0
\n" ); document.write( "b^2=-4 or b^2=-9
\n" ); document.write( "b = 2i or b = -2i
\n" ); document.write( "b = 3i or b = -3i\r
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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