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Sagot :

Réponse :

Explications étape par étape

Bonjour

Calculer :

A = 2 log 100 + log V(0,01) + log 1000

A = 2 x 2 + log 0,1 + 3

A = 4 - 1 + 3

A = 6

Montrer que :

1/2 log25 + log8 = 1 + 2log2

= log (25)^(1/2) + log 2^3

= log V25 + log 2^3

= log 5 + log 2^3

= log (5 x 2^3)

= log (40)

= log (4 x 10)

= log 4 + log 10

= log (2^2) + 1

= 1 + 2 log 2

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