Jika f(x) = x-5 dan g(x) = 2x²-5x+3 maka, (g0f) (2)=

diket: f(x) = x-5
g(x)=2x^2-5x+3
dit: (gof)(2)
jawab:
(gof)(x)=2(x-5)^2-5(x-5)+3
=2(x^2-10x+25)-5x+25+3
=2x^2-20x+25-5x+25+3
=2x^2-25x+53
(gof)(2)=2(4)-25(2)+53
=8-50+53
=11