Równanie wykładnicze.
2^(3x)* 7^(x-2) = 4^(x +1)
2^(3x) * 7^(x -2) = (2^2)^(x +1) = 2^(2x +2) / : 2^(3x)
7^(x -2) = 2^(-x +2) / : 2^(-x +2)
7^(x-2) / 2 ^(-x +2) = 1
7^(x-2) /[ 2 ^(-1)]^(x -2) = 1
7^(x-2) / 0,5^(x-2) = 1
[ 7/0,5]^(x -2) = 1
14^(x-2) = 1
x-2 = 0
x = 2
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2^(3x)* 7^(x-2) = 4^(x +1)
2^(3x) * 7^(x -2) = (2^2)^(x +1) = 2^(2x +2) / : 2^(3x)
7^(x -2) = 2^(-x +2) / : 2^(-x +2)
7^(x-2) / 2 ^(-x +2) = 1
7^(x-2) /[ 2 ^(-1)]^(x -2) = 1
7^(x-2) / 0,5^(x-2) = 1
[ 7/0,5]^(x -2) = 1
14^(x-2) = 1
x-2 = 0
x = 2
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