Question

For what real values of x is the expression x2 - 2x - 3 positive?​

Answer 1

Answer:

x² - 2x - 3 = 0

x² + 1x - 3x - 3 = 0

x (x + 1) -3 (x + 1) = 0

(x + 1) (x - 3) = 0

x = -1 OR x = 3

The positive value of x is 3.