F(x)= X kuadrat + 5x-3 g(x) = 10x - 7 pertanyaan : a).f+g b). f-y c). f x y d). F:9 Tolong dijawab benar yah, dgn penyelesaiannya Tolong bangeet

f(x) = x^2 + 5x -3 dan g(x) = 10x -7
a) f + g = (x^2 +5x -3)+(10x-7)
= x^2 +5x -3 + 10x -7
= x^2 +15x -10
b) f - g = (x^2 +5x -3)-(10x-7)
= x^2 +5x -3 -10x +7
= x^2 -5x +4
c) f . g = (x^2+5x-3)(10x-7)
= 10x^3-7x^2+50x^2-35x-30x+21
= 10x^3+43x^2-65x+21
d) f/g = (x^2+5x-3)/(10x-7)