If x is a number such that x^2 + 2x - 24 = 0 and x^2 - 5x + 4 = 0, then x =
Choose the correct choice from the following options:
A) 4 B) - 4 C) - 3 D) - 6 E) 1

Rationale: x ^ 2 + 2 x - 24 = ( x + 6 ) ( x - 4 ) = 0 then x = - 6 or x = 4 . x ^ 2 - 5 x + 4 = ( x - 4 ) ( x - 1 ) = 0 then x = 4 or x = 1 . thus x = 4 . the answer is a .
Answer: A