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Meilleure réponse !
2014-03-05T22:32:50+01:00
C= 26x101 = 26x(100+1) =26x100 +26x1 =2600+26 =2626.
H = 92x99 = 92x(100-1) =9200 -92 =9108.
I =157x8 -157x7,99 =157x(8-7,99) =157x0,01 =1,57
2014-03-05T22:43:20+01:00
C=26×101= 26×(100+1)=26×1+26×100=26+2600=2626
H=92×99=92×(100-1)=92×100-92×1=9200-92=9108
I=157×8-157*7.99=157×(8-7.99)=157×0.01=1.57