计算:(1)a^-2b^-3·(-3a^-1b^2)÷6a^-4b^-2 (2)(3ab)^-3(2ab^-1)^-2
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计算:(1)a^-2b^-3·(-3a^-1b^2)÷6a^-4b^-2 (2)(3ab)^-3(2ab^-1)^-2
![计算:(1)a^-2b^-3·(-3a^-1b^2)÷6a^-4b^-2 (2)(3ab)^-3(2ab^-1)^-2](/uploads/image/z/804163-67-3.jpg?t=%E8%AE%A1%E7%AE%97%EF%BC%9A%EF%BC%881%EF%BC%89a%5E-2b%5E-3%C2%B7%28-3a%5E-1b%5E2%29%C3%B76a%5E-4b%5E-2+%EF%BC%882%EF%BC%89%EF%BC%883ab%EF%BC%89%5E-3%EF%BC%882ab%5E-1%29%5E-2)
a^-2b^-3·(-3a^-1b^2)÷6a^-4b^-2
=1*(-3)÷6*a^[-2-1-(-4)]b^[-3+2-(-2)]
=-1/2*ab^3
=-ab^3/2
(3ab)^-3(2ab^-1)^-2
=3^(-3)*a^-3b^-3*2^(-2)*a^-2b^2
=1/27*1/4*a^(-3-2)b^(-3+2)
=1/108*a^-5b^-1
=a^-5b^-1/108
=1*(-3)÷6*a^[-2-1-(-4)]b^[-3+2-(-2)]
=-1/2*ab^3
=-ab^3/2
(3ab)^-3(2ab^-1)^-2
=3^(-3)*a^-3b^-3*2^(-2)*a^-2b^2
=1/27*1/4*a^(-3-2)b^(-3+2)
=1/108*a^-5b^-1
=a^-5b^-1/108
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