document.write( "Question 279716: hi there this is my first time i got on to the site and i just like a break down on how (a+b)2 = a2 + 2ab + b2 . it would be a big help if you could tell why it is not a2 + b2 ps a2 means a to the power 2 thank you \n" ); document.write( "
Algebra.Com's Answer #203315 by Alan3354(69443)\"\" \"About 
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hi there this is my first time i got on to the site and i just like a break down on how (a+b)2 = a2 + 2ab + b2 . it would be a big help if you could tell why it is not a2 + b2 ps a2 means a to the power 2 thank you
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\n" ); document.write( "\"%28a%2Bb%29%5E2+=+%28a%2Bb%29%2A%28a%2Bb%29\"
\n" ); document.write( "= a*(a+b) + b*(a+b)
\n" ); document.write( "= \"a%5E2%2Bab+%2B+ab%2Bb%5E2\"
\n" ); document.write( "= \"a%5E2+%2B+2ab+%2B+b%5E2\"
\n" ); document.write( "-----------------------
\n" ); document.write( "It's easy to prove it's not a^2 + b^2
\n" ); document.write( "Let a = b = 1
\n" ); document.write( "a^2 + b^2 = 1 + 1 = 2
\n" ); document.write( "(a + b)^2 = 2^2 = 4
\n" ); document.write( "2 <> 4 QED\r
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