What are the solutions of the equation (x – 3)^2 + 2(x – 3) – 8 = 0?

What are the solutions of the equation (x – 3)^2 + 2(x – 3) – 8 = 0? Use u substitution to solve.

a. x = –5 and x = 1
b. x = –1 and x = 5
c. x = –1 and x = –7
d. x = 1 and x = 7