1.(3x10^-6)^2÷(10^-3)^4 2.4-(-2)^-2÷3^2÷(-3)^0 计算,.(3x10^-6)^2÷(10^-3)^44-(-2)^-2÷3^2÷(-3)^0快快快22点前有效

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1.(3x10^-6)^2÷(10^-3)^4 2.4-(-2)^-2÷3^2÷(-3)^0 计算,.(3x10^-6)^2÷(10^-3)^44-(-2)^-2÷3^2÷(-3)^0快快快22点前有效

1.(3x10^-6)^2÷(10^-3)^4 2.4-(-2)^-2÷3^2÷(-3)^0 计算,.(3x10^-6)^2÷(10^-3)^44-(-2)^-2÷3^2÷(-3)^0快快快22点前有效
1.(3x10^-6)^2÷(10^-3)^4 2.4-(-2)^-2÷3^2÷(-3)^0 计算,
.(3x10^-6)^2÷(10^-3)^4
4-(-2)^-2÷3^2÷(-3)^0
快快快22点前有效

1.(3x10^-6)^2÷(10^-3)^4 2.4-(-2)^-2÷3^2÷(-3)^0 计算,.(3x10^-6)^2÷(10^-3)^44-(-2)^-2÷3^2÷(-3)^0快快快22点前有效
1.(3x10^-6)^2÷(10^-3)^4
=9/10^12/1/10^12
=9/10^12/10^12
=9/10^24
2.4-(-2)^-2÷3^2÷(-3)^0
=4-1/4/9
=4-1/36
=143/36
3.(3x10^-6)^2÷(10^-3)^4
=9/10^12/1/10^12
=9/10^24
4.4-(-2)^-2÷3^2÷(-3)^0
=4-1/4/9
=4-9/4
=7/4

1.(3x10^-6)^2÷(10^-3)^4
=(9×10^-12)÷(10^-12)
=9×10^0
=9
2.4-(-2)^-2÷3^2÷(-3)^0
=4-1/(-2)^2÷9÷1
=4-(1/4)×(1/9)
=4-1/36
=3又36分之35