Jika g(y)=3y²-7y,tentukan: g(y-1)+g(3y).

G(y-1) + g(3y)
= (3y^2 – 7y – 1) + (3(3y^2-7y))
= (3y^2 – 7y – 1) + (9y^2-21y)
= (12y^2 – 28y – 1