(-2)的平方+(-1⼀2)的-4次幂⼀(-1⼀2)的-2次幂*(-1⼀2)的-3次幂 等于多少?

要有步骤啊,谢谢各位拉~~~
2024-12-29 11:21:53
推荐回答(1个)
回答1:

(-2)^2+(-1/2)^(-4)/(-1/2)^(-2)*(-1/2)^(-3)
=2^2+[(-2)^(-1)]^(-4)/[(-2)^(-1)]^(-2)*[(-2)^(-1)]^(-3)
=2^2+(-2)^4/(-2)^2*(-2)^3
=2^2+(2)^4/(2)^2*(-2)^3
=2^2+(2)^4/-(2)^5
=2^2-(2)^(-1)
=4-1/2
=3又1/2