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!!!!! ajutor !!!!! VA ROG !!!

Ajutor VA ROG class=

Răspuns :

1.
a) 25^ (log5 3) = 5x 5^(log5 3) = 5x3=15
b)log2 25 / log2 5 = 2log2 5 / log2 5 = 2/1 = 2
c)log3 5 x log4 9 x log5 2 =log3 5 x log2 3 x log5 2 =log2 5 x log5 2 = 1
d) √log0,5 ^2 4 =√ log1/2 ^2 2^2 = log1/2 2 = -log2 2 = -1