X²+2xy+y²/xy乘x²-2xy+y²/xy+y²=

weiweipingfan2022-10-04 11:39:541条回答

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xxjlz 共回答了22个问题 | 采纳率100%
X²+2xy+y²/xy乘x²-2xy+y²/xy+y²
=(x+y)²/xy×(x-y)²/y(x+y)
=(x+y)(x-y)²/xy²
1年前

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=2^-2
=1/4
(-1/2xy)(2/3x^2y-3/2xy^2+6/5y)
在静的夜里哭泣1年前1
老基 共回答了20个问题 | 采纳率95%
(-XY/2)(2X²Y/3-3XY²/2+6Y/5)
=-X³Y²/3+3X²Y³/4-3XY²/5
X^4-2x²y-4xy^3+4x^3y+y²(4x²+3/4y²)
X^4-2x²y-4xy^3+4x^3y+y²(4x²+3/4y²)
(x^5+x^4+x^3+x²+x+1)-x^5
x^4-11x²y²+y²
x^3+9x²+26x+24
(2x²-3x+1)²-22x²+33x-1
悠树1年前0
共回答了个问题 | 采纳率
x-y=4xy,试求2x+3xy-2y/x-2xy-y
codlcie1年前3
__刺__ 共回答了15个问题 | 采纳率80%
(2x+3xy-2y)/(x-2xy-y)
=(2(x-y)+3xy)/((x-y)-2xy)
=(8xy+3xy)/(4xy-2xy)
=11xy/2xy
=11/2
3Y 2XY---- + ---------2X+2Y (X^2)+XY
三环边上1年前1
8s6n 共回答了22个问题 | 采纳率81.8%
麻烦自己算一下!
好的老师只会指点一下哦!
不懂的请米我哦!
帮助别人真高兴!
====我哦!
[3Y/(2X+2Y)]+2XY÷[(X^2)+XY]
=[3Y/(2X+2Y)]+2Y÷[(X)+Y]
=[3Y/(2X+2Y)]+4Y÷[2X+2Y]
=7Y/(2X+2Y)
(1)-3x²y+2x²y+3xy²-2xy²
(1)-3x²y+2x²y+3xy²-2xy²
雨兮兮1年前2
yerly 共回答了15个问题 | 采纳率100%

-3x²y+2x²y+3xy²-2xy²
=(-3x²y+2x²y)+(3xy²-2xy²)
=-x²y+xy²
-2x(-1/2xy+y^3)-3x(x^2y-xy^2)=
-2x(-1/2xy+y^3)-3x(x^2y-xy^2)=
有没有简便算法
fanwuliao1年前1
123lyj 共回答了19个问题 | 采纳率89.5%
原式=x²y-2xy³-3x³y+3x²y²
若m/x²-y²=2xy-y²/x²-y²+x-y/x+y,则m的值为
若m/x²-y²=2xy-y²/x²-y²+x-y/x+y,则m的值为
flexssy61年前3
66483881 共回答了19个问题 | 采纳率84.2%
m/x²-y²
=[2xy-y²+(x-y)²]/(x²-y²)
=(2xy-y²+x²-2xy+y²)/(x²-y²)
=x²/(x²-y²)
所以m=x²
若x+y+6,xy+3,求5x^2+5y^2-2xy的值
kobe8s1年前4
arucardweiwei 共回答了19个问题 | 采纳率84.2%
若x+y=6,xy=3,求5x^2+5y^2-2xy的值
因为x+y=6,xy=3
所以5x^2+5y^2-2xy
=5(x^2+y^2)-2xy
=5(x^2+2xy+y^2)-10xy-2xy
=5(x+y)^2-12xy
=5*6^2-12*3
144
若x+y=3,xy=-2 ,则2xy-(x+y)=
clcolin1年前2
最爱懒洋洋 共回答了17个问题 | 采纳率94.1%
原式
=2×(-2)-3
=-7
(x+2)²+ ︳y+1 ︳=0 ,求5xy²-2x²y-[3x²y-(4xy²-2x²y]的值
(x+2)²+ ︳y+1 ︳=0 ,求5xy²-2x²y-[3x²y-(4xy²-2x²y]的值
ajcy1年前1
兔子_二胡 共回答了18个问题 | 采纳率61.1%
∵(x+2)²+|y+1|=0
∴x+2=y+1=0
∴x=-2,y=-1
∴原式=9xy²-7x²y
=9×(-1)×1²-7×1²×(-1)
=-9+7
=-2
2(x-3/1) +|y+1|=0,求6x y-2(x y-2xy-2x )-xy的值
2(x-3/1) +|y+1|=0,求6x y-2(x y-2xy-2x )-xy的值
2(x-3/1)²+|y+1|=0,求6x²y-2(x²y-2xy-2x²)-xy的值
神鹰鸟1年前3
joyinloe 共回答了22个问题 | 采纳率90.9%
2(x-3/1)²=0 Iy+1 I=0(x-3/1)²=0 Y+1=0x-3/1=0 Y=-1x=36x²y-2(x²y-2xy-2x²)-xy=6×3²×(-1)-2【3²×(-1)-2×3×(-1)-2×3²】-3×(-1)=-54-2【-9+6-18】+3=-54+4...
【(x+y)的2次-(x-y)的2次】÷(2xy)
论新网61年前1
山田迎男 共回答了12个问题 | 采纳率83.3%
原式=(x+y+x-y)(x+y-x+y)÷(2xy)
=(2x)(2y)÷(2xy)
=4xy÷(2xy)
=2
(3xy²)*(-2xy)
(3xy²)*(-2xy)
粉晶鬼1年前2
昆虫9020 共回答了24个问题 | 采纳率83.3%
(3xy²)*(-2xy)=-6x²y³
{(x-2y)^2-4y^2+2xy}÷2x
蓝色毕加索1年前1
zyf0107 共回答了16个问题 | 采纳率87.5%
{(x-2y)^2-4y^2+2xy}÷2x
=(x^2-4xy+4y^2-4y^2+2xy)÷2x
=(x^2-2xy)÷2x
=x/2-y