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Rezolvati ecuatiile:
a) 2+2²+x=2³+2²
b) 5²-x=5
c) 3².x+3=3³+x
d) 7⁰(x-2⁵)=2⁰
unde X este numar natural


Răspuns :

2+4+×=12
8+×=12=>×=4

25-×=5
×=20

9x+3=27+x
8x=24
x=3

x-32=1
x=33