-a^3+2b^3-3ab+2=-()=2-a^3- ()意思是:我还想问一下这一题:-a^3+2b^3-3ab+2=负的什么=2-a^3- ()
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-a^3+2b^3-3ab+2=-()=2-a^3- ()意思是:我还想问一下这一题:-a^3+2b^3-3ab+2=负的什么=2-a^3- ()
-a^3+2b^3-3ab+2=-()=2-a^3- ()
意思是:我还想问一下这一题:-a^3+2b^3-3ab+2=负的什么=2-a^3- ()
-a^3+2b^3-3ab+2=-()=2-a^3- ()意思是:我还想问一下这一题:-a^3+2b^3-3ab+2=负的什么=2-a^3- ()
解
-a³+2b³-3ab+2
=-(a³-2b³+3ab-2)
=2-a³-(3ab-2b³)
3ab-2b³
ab/a+b=3 a-2ab+b/2a-3ab+2b?
a^2-3ab+b^2/ab=( )/ab-3
a^2-3ab+b^2/ab=( )/ab -3
a+b=5 ab=-3 (2a-3b-2ab)-(a-4b-ab)
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