document.write( "Question 948046: write the expression in the standard form a+bi: 2i^15-i^7. \n" ); document.write( "
Algebra.Com's Answer #802101 by CubeyThePenguin(3113)\"\" \"About 
You can put this solution on YOUR website!
Patterns of powers of i:\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "i^0 = 1
\n" ); document.write( "i^1 = i
\n" ); document.write( "i^2 = -1
\n" ); document.write( "i^3 = -i\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "2i^15 - i^7 = 2(-i) - i = -3i
\n" ); document.write( "
\n" );