document.write( "Question 394183: the expression i^42 is equivalent to? \n" ); document.write( "
Algebra.Com's Answer #279690 by CharlesG2(834)\"\" \"About 
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the expression i^42 is equivalent to? \r
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\n" ); document.write( "\n" ); document.write( "i = sqrt(-1)
\n" ); document.write( "i^2 = -1
\n" ); document.write( "i^4 = 1
\n" ); document.write( "i^8 = 1
\n" ); document.write( "i^16 = 1
\n" ); document.write( "i^32 = 1
\n" ); document.write( "i^36 = 1
\n" ); document.write( "i^40 = 1
\n" ); document.write( "i^41 = i
\n" ); document.write( "i^42 = i^2 = -1
\n" ); document.write( "every multiple of 4 on the exponent is equal to 1
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