document.write( "Question 736559: (9b+1)^2= \n" ); document.write( "
Algebra.Com's Answer #449890 by Edwin McCravy(20059)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "Learn this rule:  (A + B)² = A² + 2AB + B²\r\n" );
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document.write( "In your problem\r\n" );
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document.write( "                  (9b + 1)²\r\n" );
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document.write( "comparing that with the above substitute 9b for A and 1 for B\r\n" );
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document.write( "                  (9b + 1)² = (9b)² + 2(9b)(1) + (1)²\r\n" );
document.write( "                            = 81b² + 18b + 1\r\n" );
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document.write( "Edwin
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