(x^5-y^5) divided (x-y) See in the picture I have done till here but can anyone tell me next step

Enter the number of complex zeros for the polynomial function f(x) = x 4+ 5x² +6

The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.

The domain of a function can be represented by which one of the following options? o a. a set of output values o b. a set of f(x) values o c. a set of input values o d. a set of both input and output values