高階math-u01-d01
Simplify (2^3 x 2^-5) / 2^-1.
A. 1/2✓ 答案
B. 1/8
C. 2
D. 4
解說
Multiply by adding exponents: 3 + (-5) = -2. Dividing by 2^-1 subtracts -1, giving -2 - (-1) = -1, so the result is 2^-1 = 1/2.
Multiply by adding exponents: 3 + (-5) = -2. Dividing by 2^-1 subtracts -1, giving -2 - (-1) = -1, so the result is 2^-1 = 1/2.