document.write( "Question 901744: if two real numbers a and b satisfy [a+b]=a-b, find the value of ab. \n" ); document.write( "
Algebra.Com's Answer #802164 by CubeyThePenguin(3113)\"\" \"About 
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a + b = a - b
\n" ); document.write( "b = -b\r
\n" ); document.write( "\n" ); document.write( "b = 0, so ab = 0
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