verify a*(b*c)=(a*b)*c by taking a=-4/7,b=14/15 and c=-3/4
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Answered by
22
a×(b×c) = (-4/7)×{14/15×(-3/4)}
=(-4/7)×(-7/10)
=(28/70)
=(4/10)
=(2/5)
(a×b)×c ={(-4/7)×14/15}×(-3/4)
=(-8/15)×(-3/4)
=(24/60)
=(4/10)
=(2/5)
hence, varify a×(b×c) =(a×b)×c
=(-4/7)×(-7/10)
=(28/70)
=(4/10)
=(2/5)
(a×b)×c ={(-4/7)×14/15}×(-3/4)
=(-8/15)×(-3/4)
=(24/60)
=(4/10)
=(2/5)
hence, varify a×(b×c) =(a×b)×c
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Answered by
5
-4/7(14/15*-3/4)=-4/7(-7/10)=2/5 and
(-4/7*14/15)*-3/4=(-8/15)*-3/4=2/5
hence proved
(-4/7*14/15)*-3/4=(-8/15)*-3/4=2/5
hence proved
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