8a^4b^3c÷2a^2b^3*(-1/2a^2bc^2)谢谢

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8a^4b^3c÷2a^2b^3*(-1/2a^2bc^2)
谢谢

8a^4b^3c÷2a^2b^3*(-1/2a^2bc^2)
=4a^2c*(-1/2a^2bc^2)
=-2a^4bc^3