tolong fast response yaa

6.
(g o f)(x) = g(f(x))
= g(x²-2x+4)
=(x²-2x+4)+3
=x²-2x+7 = 6
=x²-2x = -1

x = 2±√(-2)²-4x1x1 / 2x1
= 2±√4-4 / 2
= 2±√0 / 2
= 1

jadi nilai x yg memenuhi adalah 1