Question

计算：-2^3-8^-1乘（-1）^-2乘（-1/2）^-2乘7^0

Answer 1

-2^3 - 8^(-1)*(-1)^(-2)*(-1/2)^(-2)*7^0

= -(2^3) - [8^(-1)] * [(-1)^(-2)] * [(-1/2)^(-2)] * (7^0)

= -8 - 1/8 * [(-1)^2] * [(-2)^2] * 1

= -8 - 1/8 * 1 * 4 * 1

= -8 - 1/2

= -8.5