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4 la puterea x-1 egal cu 1pe4

Răspuns :

4ˣ⁻¹ =1/4
4ˣ⁻¹ =4⁻¹
x-1=-1
x=-1+1
x=0

4^x-1=1/4⇒
4∧x-4=4∧-1⇒
x-4≥0⇒x≥4
x-1=-1⇒x=1-1⇒x=0
sucees