What are the solutions of x^2=-11x+4

What is true about the dilation? it is a reduction with a scale factor between 0 and 1. it is a reduction with a scale factor greater than 1. it is an enlargement with a scale factor between 0 and 1. it is an enlargement with a scale factor greater than 1.

If f(x) = 4x - 3 and g(x) = x + 4, find (f - g) (x)

How is this equation completed? i cannot find any examples in the book.