黄昏过后
幼苗
共回答了61个问题 举报
2a(a-3)²-6a²(3-a)+8a(a-3) =2a(a-3)²+6a²(a-3)+8a(a-3)
=2a(a-3)[(a-3)+3a+4]= 2a(a-3)(4a+1)
24xy²z²(x+y-z)-32xyz(z-x-y)²+8xyz^3(z-x-y)
=24xy²z²(x+y-z)-32xyz(x+y-z)²-8xyz^3(x+y-z)
= 8xyz(x+y-z)[3yz-4(x+y-z)-z²]
= 8xyz(x+y-z)[3yz-4(x+y-z)-z²]
1年前
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