Question

Mentionati conditia in care fractia $\frac{(x-3)(x+3)}{x x^{2} -4x+4}$ este definita si simplifico

Answer 1

x²  -4x + 4 = ( x -2)² ≠ 0     ;   x -2 ≠0  ;  x ≠ 2 
x∈ R \ { 2} 

fractia = ( x -3 ) · ( x +3) / ( x -2)²  ireductibila