document.write( "Question 9049: what is the relationship of (a-b)(a+b) \n" ); document.write( "
Algebra.Com's Answer #4917 by sabanasir(22)\"\" \"About 
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its a^2 - b^2
\n" ); document.write( "how u get it>?:
\n" ); document.write( "(a-b)(a+b)
\n" ); document.write( "a(a+b)-b(a+b)
\n" ); document.write( "a^2 + ab -ab - b^2
\n" ); document.write( "a^2 - b^2
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