(-3a^2-9a^3b+12a^4b^2)/(-3a^2)= 16(2m-n)^p加2/【-4(2m-n)^p-1】=
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(-3a^2-9a^3b+12a^4b^2)/(-3a^2)=16(2m-n)^p加2/【-4(2m-n)^p-1】=(-3a^2-9a^3b+12a^4b^2)/(-3a^2)=16(2m-n)^p
(-3a^2-9a^3b+12a^4b^2)/(-3a^2)= 16(2m-n)^p加2/【-4(2m-n)^p-1】=
(-3a^2-9a^3b+12a^4b^2)/(-3a^2)= 16(2m-n)^p加2/【-4(2m-n)^p-1】=
(-3a^2-9a^3b+12a^4b^2)/(-3a^2)= 16(2m-n)^p加2/【-4(2m-n)^p-1】=
(-3a^2-9a^3b+12a^4b^2)/(-3a^2)
=1+3ab-4a²b²
16(2m-n)^p加2/【-4(2m-n)^p-1】
=-4(2m-n)^(p+2-p+1)
=-4(2m-n)³
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1/4(a-b)^2+3(a-b)(a+b)+9(a+b)^2
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9(a-b)(a+b)-3(a-b)^2
2a(a-b)+4a(2a+3b)
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