Răspuns:
[tex]f = 0 \: \: \: x = \frac{70}{20} = \frac{7}{2} [/tex]
[tex]x = 0 \: \: \: y = 70 \: \: \: ( \frac{7}{2} ..70)[/tex]
[tex]g = 0 \: \: \: x = - \frac{70}{30} = \frac{7}{3} [/tex]
[tex]x = 0 \: \: \: y = 30 \: \: \: ( - \frac{3}{7} \: \: .. 30)[/tex]
