1. diektahui f(x) = x-3 , g(x) = 2x+5 , h(x) = x^2 +1 . tentukan : a. (g•h•f) (x) b. (h•f•g) (x) 2. diketahui f(x) = 3x + 2, g(x) = 5-x , h(x) = x / x-2 . tent

1)a. (g•h•f)(x)=2((x-3)²+1)+5=2(x²-6x+10)+5=2x²-12x+25
b. (h•f•g)(x)=((2x+5)-3)²+1=(2x+2)²+1=4x²+8x+5

[tex](fogoh)(x) = 3(5 - ( \frac{x}{x - 2} )) + 2 = 3( \frac{ 4x - 10}{x - 2} ) + 2 \\ (fogoh)(3) = 3( \frac{4(3) - 10}{3 - 2} ) + 2 = 3(2) + 2 = 8[/tex]