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Short Techniques & Formulas ( )(
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Web: http://tanbircox.blogspot.com
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Middile term: , q (a b ) x q (q= a+b) r (r=ab)
(
(1) q>0, r>0 ( )(
) )(
))
2) q0 ( )( )3) q>0, r0 1 r , n
r < 0 1 r (.1 -.9 ) , n
-1