Question

F(x)=x²-nx Dan g(x)=3x+14. jika (f o g)(-4)+2= (g o f)(2) maka nilai n??

Answer 1

fog (-4) + 2 = gof(2)
f{ g(-4) } + 2 = g{ f(2) }
f(2) +2 = g (4- 2n)
4 - 2n + 2 = 3(4-2n) +14
6 - 2n = 12 -6n + 14
4n = 20
n = 5