\text { Given } f(x)=-7 x^{9}-x^{8}+4 x^{3}-4 \text { and } g(x)=-7 x^{9}-3 x^{3}-5 x^{2}+2, \text { find and simplify } f(x)-g(x) \text { . } Identify the degree and

leading coefficient of f(x) – g(x).