關(guān)于xy的多項(xiàng)式6mx的平方加4nxy加2x加2xy減x的二次方加y加4不含二次項(xiàng),求2m平方n加10m減4n加2減2m的平方n減4m減12n
關(guān)于xy的多項(xiàng)式6mx的平方加4nxy加2x加2xy減x的二次方加y加4不含二次項(xiàng),求2m平方n加10m減4n加2減2m的平方n減4m減12n
數(shù)學(xué)人氣：985 ℃時間：2020-03-23 09:04:30
優(yōu)質(zhì)解答
關(guān)于xy的多項(xiàng)式6mx的平方加4nxy加2x加2xy減x的二次方加y加4不含二次項(xiàng)所以6m-1=0,4n+2=0所以m=1/6,n=-1/2所以2m平方n加10m減4n加2減2m的平方n減4m減12n=2m^2n+10m-4n+2-2m^2n-4m-12n=6m-16n+2=1+8+2=11如果不懂,請追...
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