Using dichotomy to find the approximate interval of the real root of the - x power - 2x + 5 = 0 of equation 2

Using dichotomy to find the approximate interval of the real root of the - x power - 2x + 5 = 0 of equation 2

Let f (x) = 2 to the power of - X - 2x + 5, take x = 2, f (x) greater than 0
Let x = 3 and f (x) be less than 0
The point is to keep taking values. Just remember to follow between different numbers