Answer:
g(-3)= -45
Step-by-step explanation:
[tex]G(n)=n^{3}-2n^{2} \\[/tex]
Now you have to replace n for -3 because you have to find g(-3).
[tex]g(-3) = (-3)^{3}-2(-3)^{2} \\= -27-18 \\=-45[/tex]