Question 85220
You have f(-2) = 16 , f(-1) = 3 , f(0) = 2 , f(1) = 1 and f(2) = -4. Since f(x) changes sign from x = 1 to x = 2, by the Intermediate Value Theorem there must be a zero between 1 and 2. Tha answer is (1 , 2).