Question

1. If f(x) =x²- 2x + 4, then the set of values of x
satisfying f(x - 1) = f(x + 1) is
(a) {-1} (b) {-1.1) (c) {1} (d) {1,2}​

Answer 1

Answer:

x(x+2) (x² -1) = -1 , find valie of x