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Sa se determine numarul natural daca x:
a) x la puterea 2:5=80
B)x la puterea 2-1=440


Răspuns :

x la a 2 a : 5=80
x la a 2 a = 80×5= 400
x = 20
b) x la puterea 2-1=440
x la puterea 1=440
x= 440
x^2:5=80
x^2=
80×5
= 400
x = 20
b) x^2-1=440
x^1=440
x= 440