Răspuns:
Explicație pas cu pas:
a) 5^x = 125 => 5^x = 5^3 => x = 3
b) 4^x = 1024 = > 4^x = 4^5 => x = 5
c) 9^x = 1/729 => 3^2x = 3^-6 => 2x = -6 => x = -3
d) 25^x = 0.2 => 5^2x = 5^-1 => 2x = -1 => x = -1/2
e) 2^(x+3) = 32 => 2^(x+3) = 2^5 => x+3 = 5 => x = 2
f) 8^x = 16 => 2^3x = 2^4 => 3x = 4 => x = 4/3
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Răspuns:
Explicație pas cu pas:
a) 5^x = 125 => 5^x = 5^3 => x = 3
b) 4^x = 1024 = > 4^x = 4^5 => x = 5
c) 9^x = 1/729 => 3^2x = 3^-6 => 2x = -6 => x = -3
d) 25^x = 0.2 => 5^2x = 5^-1 => 2x = -1 => x = -1/2
e) 2^(x+3) = 32 => 2^(x+3) = 2^5 => x+3 = 5 => x = 2
f) 8^x = 16 => 2^3x = 2^4 => 3x = 4 => x = 4/3