若m的x次方=2,m的y次方=3,求m的x y次方
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稍等一下再问:嗯再答:解x^3m=4y^3n=5(x^m)³=4∴x^m=³√4(y^n)³=5∴y^n=³√5(x^2m)³+(y^n)³
x^3y^(m-1)x^(n+m)y^(2n+2)=x^(3+n+m)y^(m-1+2n+2)=x^(m+n+3)y^(m+2n+1)=x^9y^9m+n+3=9m+2n+1=9解得m=4n=24m-
x^(m-n)*x^(2n+1)=x^11.(m-n)+(2n+1)=11.m+n=10y^(m-1)*y^(4-n)=y^5.(m-1)+(4-n)=5.m-n=2(m+n)(m-n)=20m=6n
2x^3*y^n-5x^m*y^2是同类项m=3n=2
根据题意得(m-n)-(2n-1)=11(m-1)-(4-n)=9解这个方程组得m=13n=1
x^(m-n)*x^(2n-1)=x^(m+n-1)=x^11m+n-1=11y^(m-1)*y^(4-n)=y^(m-n+3)=y^7m-n+3=7相加2m+2=18所以m=8n=m+3-7=4再问
2^m=x-1则4^m=(x-1)^2=y-3y=x^2-2x+4后一个题目不完整若x^m*x^2m=x^m=a则x^9m=a^3
(m+n)x^ny^(m-2)(3xy^2+5x^2y)=21x^my^(n+1)+35x^(m+1)y^n=7x^(m-1)y^(n-1)(3xy^2+5x^2y)m+n=7n=m-1m-2=n-1
100^x*100^(y+1)=100^[x+(y+1)]=100^(x+y+1)=(102)^(x+y+1)=10^[2(x+y+1)=10^(2x+2y+2)]而100^x*100^(y+1)=1
解由单项式3x的2次方y的n次方与﹣2x的m次方y的三次方则x与y的指数相等故m=2且n=3即m+n=5.
x的3M次方=4,y的3n次方=5,==>,y的n次方=5^(1/3)(x的2m次方)的立方+(y的n次方)的立方-x的2m次方×y的n次方×x的4m次方×Y的n次方=x的6M次方+y的3n次方﹣x的
是同类项则m+1=45=2n+1所以m=3,n=2所以原式=3m²-3m²=0
m-n+2n+1=11m-1+4-n=7m+n=10m-n=4∴m=7n=3
2x的三次方y的n次方与5x的m次方y是同类项m=3n=1n的m次方=1³=1
x^(n-m)*x^(2n+1)=x^11==>(n-m)+(2n+1)=11(1)y^(m-1)*y^(4-n)=y^5==>(m-1)+(4-n)=5(2)由(1)、(2)式解方程组得m=8,n=
你好!同类项要求字母的次数相同所以m=1,n=3有疑问请追问,满意请采纳o(∩_∩)o
x^(3m+6)y^6*x^4y^(2n-6)=x^13y^8x^(3m+10)y^2n=x^13y^83m+10=13,m=12n=8,n=4
x^3m=4,y^3n=5(x的2m次方)3次方+(y的n次方)3次方-x的2m次方·y的n次方·x的4m次方·y的2n次方=(x^3m)^2+y^3n-(x^3m)^2y^3n=4^2+5-4^2*
^表示次方(x的2m)3次方+(y的n次方)3次方—x的2m次方×y的n次方×X的4m次方×y的2n次方=x^6m+y^3n-x^6my^3n=(x^3m)^2+y^3n-(x^3m)^2y^3n因为