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calculati [tex] 2^{ x^{2} -4x} = \frac{1}{8} [/tex]

Răspuns :

1/8=1/2³=2⁻³

=>x²-4x=-3
x²-4x+3=0
x₁=1, x₂=3
1:8=1:2³=2⁻³
=>x²-4x=-3
x²-4x+3=0
x₁=1, x₂=3