document.write( "Question 1183614: If i =1, then (5 + 2i)2 =?
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Algebra.Com's Answer #814017 by MathLover1(20850) $\"\"$ $\"About$

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\n" ); document.write( "\n" ); document.write( "If $\"i+=1\"$ , then $\"%285+%2B+2i%29%5E2\"$ =?\r
\n" ); document.write( "\n" ); document.write( "first, $\"i+%3C%3E1\"$ \r
\n" ); document.write( "\n" ); document.write( "as you know $\"i+=+-1\"$ \r
\n" ); document.write( "\n" ); document.write( "then $\"%285+%2B+2i%29%5E2=%285+%2B+2%28-1%29%29%5E2=%285-2%29%5E2=3%5E2=9\"$ \n" ); document.write( "

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