diketahui f(x)=2x + 3,g(x) =x² + 4x +1 , dan h(x)= x- 5,maka (f•g•h)(x)=… a) 4x²+8x - 17 b) 4x²- 10x +13 c) 4x² - 12x - 5 d) 2x² - 12x + 15 e) 2x²+ 10x - 11 Tol

(goh)(x)=g(h(x))
=g(x-5)
=(x-5)^2+4(x-5)+1
= x^2-10x+25+4x-20+1
=x^2-6x+6

(f(goh))(x)= 2(x^2-6x+6)+3
= 2x^2-12x+12+3
=2x^2-12x+15. D