Jika f(x) =x-3 dan g(x) =2x³+5x Tentukan:a. (f+g)(x) b. (f-g)(x) c. (f×g)(x)

f(x)=x-3
g(x)=2x³+5x

a.(f+g)(x)
= f(x) + g(x)
= x-3 + 2x³+5x
= 2x³+6x-3

b.(f-g)(x)
= f(x) - g(x)
= x-3 - (2x³+5x)
= -2x³-4x - 3

c.(fxg)(x)
= f(x) x g(x)
= x-3 x (2x³+5x)
= x^4 + 5x² - 6x^3 - 15x
= x^4 - 6x^3 + 5x² - 15x