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Calculati:
a) |x|+3x+2+|2-x|, daca x < 0
b) |x la 2 +2| - radical din x la 4 + |x-6| + 6x-2 , daca 0 < x < 6


Răspuns :

a)x+3x+2+2-x=3x+4
Sau x+3x+2-2+x=5x
b)x^2+2-x^2+x-6+6x-2= 7x+6