If g (c) = 1 - c² and m(c) = c + 1, then which statement is not true?
1) g(c)*m(c)=1+c-c^2-c^3
2) g(c) + m(c) = 2 + c = c²
3) m(c) = g(c) = c + c²
4) g(c) - m(c) = 2-c-c²