Jika f(x)=x+1 da(fog)(x)=3x2 + 4, maka g(s4) adalah .....

jdi ......g(x)+1=3x²+4....g(x)=3x²+4-1.....g(x)=3x²+3......g(4)=3(4)²+3....g(4)=3(16)+3....g(4)=48+3....g(4)=51