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Stetman
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(4/25)^x(125/8)^x-1=5/2

Răspuns :

Renatemambouko
(4/25)ˣ(125/8)ˣ⁻¹=5/2

(2²/5²)ˣ(5³/2³)ˣ⁻¹=5/2

2²ˣ/5²ˣ × 5³ˣ⁻³/2³ˣ⁻³=5/2

5ˣ⁻³/2ˣ⁻³=5/2

(5/2)ˣ⁻³=5/2
x-3=1
x=4


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