(1).(1/2a^2b)^2(2).(-b)^2·(-b^2)(3).(a^2·a^n)^m·(a^3·a^m)^n(4).(-xy^n)^2+(2xy^2)^n
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![(1).(1/2a^2b)^2(2).(-b)^2·(-b^2)(3).(a^2·a^n)^m·(a^3·a^m)^n(4).(-xy^n)^2+(2xy^2)^n](/uploads/image/z/6851698-34-8.jpg?t=%281%29.%281%2F2a%5E2b%29%5E2%282%29.%28-b%29%5E2%C2%B7%28-b%5E2%29%283%29.%28a%5E2%C2%B7a%5En%29%5Em%C2%B7%28a%5E3%C2%B7a%5Em%29%5En%284%29.%28-xy%5En%29%5E2%2B%282xy%5E2%29%5En)
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(1).(1/2a^2b)^2(2).(-b)^2·(-b^2)(3).(a^2·a^n)^m·(a^3·a^m)^n(4).(-xy^n)^2+(2xy^2)^n
(1).(1/2a^2b)^2
(2).(-b)^2·(-b^2)
(3).(a^2·a^n)^m·(a^3·a^m)^n
(4).(-xy^n)^2+(2xy^2)^n
(1).(1/2a^2b)^2(2).(-b)^2·(-b^2)(3).(a^2·a^n)^m·(a^3·a^m)^n(4).(-xy^n)^2+(2xy^2)^n
(1).(1/2a^2b)^2
=1/4a^4b
(2).(-b)^2·(-b^2)
=b^2*(-b^2)
=-b^4
(3).(a^2·a^n)^m·(a^3·a^m)^n
=a^2n+m*a^3m+n
=a^3n+4m
(4).(-xy^n)^2+(2xy^2)^n
=x^2y^2n+2^nx^ny^2n
^是乘号还是平方啊???