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Ex 4 rapid va rog!Dau coroana!

Ex 4 Rapid Va RogDau Coroana class=

Răspuns :

b*(a+c) =b*a+b*c=23/24+1/6=23/24+4/24=27/24=9/8

b*(a-c)=b*a-b*c=23/24-1/6=23/24-4/24=19/24

Răspuns:

Explicație pas cu pas:

a*b=23/24

b*c=1/6

b*(a+c)=b*a+b*c=>23/24+1/6=>23/24+4/24=>27/24=9/8 =>b*(a+c)=9/8

b*(a-c)=b*a-b*c=23/24-1/6=23/24-4/24=19/24 =>b*(a-c)=19/24