document.write( "Question 80436: Write each expression as a complex number in the form of a + bi\r
\n" ); document.write( "\n" ); document.write( "5i - sq rt of -84\r
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Algebra.Com's Answer #57722 by tutorcecilia(2152)\"\" \"About 
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5i - sq rt of -84
\n" ); document.write( "5i-(84i) [the square root of a negative number is an imaginary number]
\n" ); document.write( "5i-84i
\n" ); document.write( "-79i
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