(m-n)³+2n(n-m)²2分之一a³b+2a²b²+2ab³
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(m-n)³+2n(n-m)²2分之一a³b+2a²b²+2ab³
(m-n)³+2n(n-m)²
2分之一a³b+2a²b²+2ab³
(m-n)³+2n(n-m)²2分之一a³b+2a²b²+2ab³
(m-n)³+2n(n-m)²
=(m-n)³+2n(m-n)²
=(m-n)²[(m-n+2n)
=(m-n)²(m+n)
2分之一a³b+2a²b²+2ab³
=(ab/2)·(a²+4ab+4b²)
=(ab/2)·(a+2b)²
(m-n)³+2n(n-m)² =(m-n)³+2n(m-n)² =(m-n)^2(m-n+2n) =(m-n)^2(m+n) 2分之一a³b+2a²b²+2ab³ =2分之一ab(a^2+4a...
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(m-n)³+2n(n-m)² =(m-n)³+2n(m-n)² =(m-n)^2(m-n+2n) =(m-n)^2(m+n) 2分之一a³b+2a²b²+2ab³ =2分之一ab(a^2+4ab+4b^2) =ab/2*(a+2b)^2
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(m-n)³+2n(n-m)²
=(m-n)³+2n(m-n)²
=(m-n)²{(m-n)+2n}
=(m-n)²(m-n)
=(m-n)³
1/2-a³b+2a²b²+2ab³
=1/2-ab(a²+2a+2b²)
=1/2-ab(a(a+2)+2b²)
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