Question

Factor: x2 - 24x + 144
A. (x - 12)(x + 12)
B. (x - 6)(x + 24)
C. (x - 12)2
D. (x - 72)2

Answer 1

C

Answer 2

C. (x - 12)^2

Answer 3

c ......min{x^2-24 x+144} = 0 at x = 12