-3xy除以3x分之2y的平方
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/18 17:39:53
![-3xy除以3x分之2y的平方](/uploads/image/f/20424-48-4.jpg?t=-3xy%E9%99%A4%E4%BB%A53x%E5%88%86%E4%B9%8B2y%E7%9A%84%E5%B9%B3%E6%96%B9)
(xy分之X的平方-Y的平方)的平方除以【(X+Y)*(X分之X-Y)的3次方]除以y的平方分之x=[(x^2-y^2)^2/x^2y^2]÷[x^2-y^2)(x-y)^2/x]^3÷(x/y^2)
x-3y=0x=3y(2x+y)/(x^2-2xy+y^2)÷1/(x-y)=(2x+y)/(x-y)^2÷1/(x-y)=(2x+y)/(x-y)^2*(x-y)=(2x+y)/(x-y)=(2*3
3x^2+xy-2y^2=(3x-2y)(x+y)=0x=-2y/3,或x=-y但由于你要求的式子中分母里有X平方-Y平方x=-y舍去其他就代入吧
3x^2+xy-2y^2=0(3x-2y)(x+y)=0x=2/3y或x=y(舍去)X-Y分之X+YX-Y不等于0题目太乱了,剩下的自己代进去算吧!
解题有点难写,你找我上Q吧,我语聊告诉你,1256769059
【x-y-(x-y分之4y平方)】【x+y-(x+y分之4x平方)】除以【3(x+y)-x-y分之8xy】=(x-y-x+4y)(x+y-x-4x/y)/(3x+3y-x-8x)=3y*(y-4x/y
分式的计算1.3a除以4b乘以16b除以9a的平方=(3a/4b)*(16b/9a^2)=4/3a2.12xy除以5a除以8x的平方y=(12xy/5a)/8x^2y=3/10ax3.-3xy除以3x
你用文字表达出来的式子不太好理解,还是试着解了一下:2a的平方b-4b的平方分之-3a[2a²b-(-3a)]/(4b²)=(8a²b³)/(4b²)
(xy-x的平方)除以xy分之x的平方-2xy+y的平方乘x的平方分之x-y=x(y-x)*xy/(x-y)²*(x-y)/x²=-y再问:不好意思,打错了(xy-y的平方)除以x
(xy-x²)÷(x²-2xy+y²)/(x-y)×(x-y)/x²=-x(x-y)÷(x-y)²/x²=-x(x-y)×x²/(
=(x-2y)(x-y)/(x-y)²=(x-2y)/(x-y)再问:做完啊。。。。。。再答:好了呀这个不可以再化简了,是一个最简分式了再问:刚刚不小心题目打掉了,你在看已知Y分之X等于7分
x的平方+3xy+2y的平方除以x的平方y+2xy的平方=(x+2y)(x+y)/xy(x+2y)=12/9=4/3再问:那个再问一下不改变分式的值使分式的分子分母首项系数都是正数-(负7xy/负8z
=(xy-x的平方)除以(x的平方-2xy+y的平方\xy)乘以(x-y\x的平方)=-x(x-y)×xy/(x-y)2×(x-y)/x2=-y再问:嗯
(xy-x²)÷(x²-2xy+y²)./xy·(x-y)/x²=-x(x-y)·xy/(x-y)²·(x-y)/x²=-x²y(
x平方+y平方+2xy分之x平方-4y平方除以x平方+xy分之2y+x=(x-2y)(x+2y)/(x+y)²·x(x+y)/(x+2y)=x(x-2y)/(x+y)
x平方-3xy+2y平方=0(x-2y)(x-y)=0x=2yx=y(1)x=2y则xy分之x平方+y平方的值=((2y)^2+y^2)/(2y*y)=(4y^2+y^2)/(2y^2)=5/2(1)
原式(-xy/3)²*[xy(2x-y)-2x(xy-y²)]=(x²y²/9)(2x²y-xy²-2x²y+2xy²)
x(y-x)÷(x²-2xy+y²)/xy×(x-y)/x²=-x(x-y)×xy/(x-y)²×(x-y)/x²=-y
下列代数式中符合书写要求的是()C4分之x平方y