Friday, October 26, 2007

DECIMAL FRACTIONS

DECIMAL FRACTIONS


1.


[ (a2-b2)/(a+b) ] = [ a-b ]




2.


[ (a2-b2)/(a-b) ] = [ a+b ]




3.


[ (a3+b3)/(a2-(a*b)+b2) ] = [ a+b ]




4.


[ (a3-b3)/(a2-(a*b)+b2) ] = [ a-b ]




5.


[ (a+b)2+(a-b)2 /(a2+b2) ] = 2




6.


[ (a2+b2-(2*a*b) )/(a-b) ] = [ a-b ]




7.


[ (a2+b2+(2*a*b) )/(a+b) ] = [ a+b ]


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