Given x = 2 + 1, find the value of X + 1 - x 2x - 1

Given x = 2 + 1, find the value of X + 1 - x 2x - 1

X + 1-x2x-1 = (x + 1) (x-1) x-1-x2x-1 = x2-1x-1-x2x-1 = x2-1-x2x-1 = - 1x-1, when x = 2 + 1, the original formula = - 12 + 1-1 = - 22

It is known that f (x) = {X & # 178; + X + 1, X ≥ 0, 2x + 1, X

When x ≥ 0, it is easy to get: X & # 178; + X + 1 ≥ 1;
x

It is known that the N + 7 power of 2009x is the same as the 2m + 3 power of - 2010x, then the value of the 2 power of (2m-n) is

According to the meaning of the title, N + 7 = 2m + 3
So 2m-n = 7-3 = 4
The second power of (2m-n) = 4 * 4 = 16