Determine o domínio das função definido a) F (x) = X X-5 b) F (x) = X X*2-4 c) F (x) = X+2 2x d) F (x) = X 2x-1 e) F (x) = 1 X*2-9X+20 F) F (x) = 1+X X+X+3 g) F(x) = X+1+1 X-1 X*2-9 i) F (x) = raiz quadrada 2X-1