9减m方分之m方减3m-搜答案-智慧作业帮

1/m-m=-1两边平方1/m²-2+m²=1所以m²+1/m²=3

m^2-n^2=6m-n=3故m^2-n^2=(m+n)(m-n)m+n=2

(m+n分之m)+(m-n分之m)-(m方-n方,分之n方)=m(m-n)/(m^2-n^2)+m(m+n)/(m^2-n^2)-n^2/(m^2-n^2)=(m^2-mn+m^2+mn-n^2)/(

（m方加3m）平方减8（m方加3m）减20=(m^2+3m-10)(m^2+3m+2)=(m+5)(m-2)(m+1)(m+2)很高兴为您解答,【the1900】团队为您答题.请点击下面的【选为满意回

m+1/m=3平方,得:m²+2+1/m²=9m²+1/m²=7m^2/(m^4+m^2+1).同时除以m²=1/(m²+1+1/m

已知m^2-n^2=mn求m^2/n^2+n^2/m^2通分得m^4+n^4/m^2n^2而m^4+n^4=m^4-2m^2n^2+n^4+2m^2n^2=(m^2-n^2)^2-2m^2n^2=(m

(m²-3m)/(9-m²)=m(m-3)/(3+m)(3-m)=-m/(m+3);您好,很高兴为您解答,skyhunter002为您答疑解惑如果本题有什么不明白可以追问,如果满意

m²-2mn+3m+3n+n²=(m-n)²+3(m+n)=1/16+9/4=37/16

m^2-3m+1=0m-3+1/m=0m+1/m=31)m^2+1/m^2=(m+1/m)^2-2=3^2-2=72)m^4+1/m^4=(m^2+1/m^2)-2=7^2-2=47

3-m分之2和m的二次方减9分之12,的最简公分母（m+3）（m-3）~如果你认可我的回答,请及时点击【采纳为满意回答】按钮~~手机提问者在客户端右上角评价点【满意】即可.~你的采纳是我前进的动力~~

∵n分之m=3分之5∴n=3m/5(m+n分之m)+(m-n分之m)-(m方-n方,分之n方)=m/(m+n)+m/(m-n)-n²/(m²-n²)=(m²-m

思路：把所求里逐渐凑成m^2+m+3,然后去掉即可m^5+3m^4+2m^3+2m^2-10m=m^5+m^4+3m^3+2m^4-m^3+2m^2-10m=m^3(m^2+m+3)+2m^4-m^3

m+1/m=3平方(m+1/m)^2=9m^+2+1/m^2=9m^2+1/m^2=7m^2-2+1/m^2=5(m-1/m)^2=5m-1/m=±√5

根号下（m方+16）分之m=负5分之3,m²/(m²+16)=9/25;m＜0;∴m²=9;m=-3;很高兴为您解答,skyhunter002为您答疑解惑如果本题有什么不

见图

(3m+n+1)·(3m-n)

m方+mn分之m方-n方=(m+n)(m-n)/m(m+n)=(m-n)/m

m/(m-n-m²+n²)=m/[(m-n)-(m²-n²)]=m/[(m-n)-(m+n)(m-n)]=m/(m-n)(1-m-n)=m(1+m+n)/(m-

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