-2²-[-1/4+(1-1/5×0.6)÷（-2）²]
解：原式=-4-[-1/4+(1-1/5×0.6)÷4]
=-4-[-1/4+0.88÷4]
=-4-[-1/4+0.22]
=-4+0.03
=-3.97
-3.97 用计算机按一下 不就得了
= -4-[-1/4+(1-1/5*3/5)÷4]
= -4-[-1/4+(1-3/25)*1/4]
= -4-[-1/4+22/100]
= -4+1/4-22/100
= -3.97
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