很高興為您解答!
正確答案為(m+2n)(3m+4n)
解題思路:
無(wú)視n,即
3m^2+10m+8
用十字相乘法得
(m+2)(3m+4)
把所有常數(shù)項(xiàng)換為n項(xiàng)即可
3m^2+10mn+8n^2
3m^2+10mn+8n^2
數(shù)學(xué)人氣:816 ℃時(shí)間:2020-07-29 19:07:42
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