(-4a^6-20a^4b^2-12a^3b+6a^3b^2)/[-(-2a)^3]
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(-4a^6-20a^4b^2-12a^3b+6a^3b^2)/[-(-2a)^3](-4a^6-20a^4b^2-12a^3b+6a^3b^2)/[-(-2a)^3](-4a^6-20a^4b^2-
(-4a^6-20a^4b^2-12a^3b+6a^3b^2)/[-(-2a)^3]
(-4a^6-20a^4b^2-12a^3b+6a^3b^2)/[-(-2a)^3]
(-4a^6-20a^4b^2-12a^3b+6a^3b^2)/[-(-2a)^3]
(-4a^6-20a^4b^2-12a^3b+6a^3b^2)/[-(-2a)^3]
=(-4a^6-20a^4b^2-12a^3b+6a^3b^2)/(-8a^3)
=a^3/2+5ab^2/2+3b/2-3b^2/4
(-4a^6-20a^4b^2-12a^3b+6a^3b^2)/[-(-2a)^3]
=-a³/2-5ab²/2-3b/2+3b²/4
(-4a^6-20a^4b^2-12a^3b+6a^3b^2)/[-(-2a)^3]
(-4a^6-20a^4b^2-12a^3b+6a^3b^2)/[-(-2a)^3]
因式分解：1、a*a*a*a+2a*a*a*b+3a*a*b*b+2a*b*b*b+b2、(a+1)(a+3)(a+4)(a+6)-280
2a-{7b+[4a-7b-(2a-6a-4b)]-3a
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