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2la putearea2x+4la putereax+1=80

Răspuns :

2x+4=0, 2x=-4,   x=-4/2=-2
x+1=80, x=80-1, x=79
(2⁻²)⁷⁹=((1/2)²)⁷⁹
(0,5²)⁷⁹=(0,25)⁷⁹