diketahui fungsi F:R_R dengan f(x)=x kuadrat 2-4x+2 dan fungsi G:R_R dengan g(x)=3x-7 a.(g0f) (x) b.(f0g) (x) c.(g0f) (5) d.(f0g) (10)

a g(f(x)) = g(x^2-4x+2)
= 3(x^2-4x+2)-7
=3x^2-12x+6 -7
=3x^2-12x-1

b f(g(x)) = f (3x-7)
=(3x-7)^2 - 4(3x-7) + 2
=9x^2-42x+49-12x+28+2
=9x^2-54x+79

c (gof) (5) = 3(5)^2-12(5)-1
=75-60-1 =14

d (fog) (10) = 9(10)^2-54(10)+79
=900-540+79 = 469