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a). (x-1)^2=49
b). (2^x+12^)=81
c). 3(x-3)2^=48​


Răspuns :

Răspuns:

a). (x-1)^2=49

x^2-2x+1=49

x^2-2x=49-1

x^2-x=48/2

x^2-x=24