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(3^x)^2 *3+8*3^x -3=0
3^x=t
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3 t^2 +8t-3=0
delta=64+36=100
t1=-8-10 /2 =-2/2=-1
t2=-8+10 /2 =2/2=1
3^x=t 3^x=-1 brak rozwiązań
3^x=1
3^x=3^0
x=0
odp x=0