Evaluate the determinant by using diagonals

This is my question~~ ( r ^ 4 - 2r ^ 3 - 23 r ^ 2 - 4r - 32)÷(r+4) ~~ i must use long division to solve it : / i was wondering if anyone world like to solve it. and if so, share step-by-step explanations! you! ❤

F(x) = 1/x g(x)=x-4 can you evaluate (g*f)(0) ? why or why not?

Angle that produces maximum distance