-2的平方减去大括号负四分之一加小括号一减五分一乘以0.6小括号除以小括号负2的平方大括号

2025-03-12 20:21:01
推荐回答(2个)
回答1:

(-2)^2-[-1/4+(1-1/5×0.6)÷(-2)^2]
=4-[-0.25+(1-0.12)÷4]
=4+0.25-0.98÷4
=4.25-0.245
=4.005

回答2:

==403/100