(4a^4b^3+16a^3b^4-8a^2b^5)÷(-2ab)^2·(-a)

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(4a^4b^3+16a^3b^4-8a^2b^5)÷(-2ab)^2·(-a)(4a^4b^3+16a^3b^4-8a^2b^5)÷(-2ab)^2·(-a)(4a^4b^3+16a^3b^4-8a

(4a^4b^3+16a^3b^4-8a^2b^5)÷(-2ab)^2·(-a)
(4a^4b^3+16a^3b^4-8a^2b^5)÷(-2ab)^2·(-a)

(4a^4b^3+16a^3b^4-8a^2b^5)÷(-2ab)^2·(-a)
(4a^4b^3+16a^3b^4-8a^2b^5)÷(-2ab)^2·(-a)
= -(4a^4b^3+16a^3b^4-8a^2b^5)÷4ab^2
=-a^3b-4a^2b^2+2ab^3
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