已知13x^2-6xy+y^2-4x+1=0,求(x^2-xy)^5的值特别注意是求(x^2-xy)^5的值,不是(xy-x^2)^5的值
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/09 06:33:23
xS]kA+%Ғ&=;k}Q&jqS-}h"ŏ)
}Q1cbd#I ,{3pS>_"n2Oۥ4-n>㴽͆aGlǾs=Jev&KQ}h$
;-_V=jV| WZL*JnMJnrW
!H;Hs(!CЙЅRw!@'HHP.%D(CF2+c/.LhF*̈́0K,bV0ˌ^R_ijt
;Ktr8-^!EQ^ENzSPIiVyӌơw&G.!z;y/==m1i a#dGEh :˞%><2/vImIS!Z8j5!PaFj(A2N[8\e%ZSoT!$aaXRKIJ11LuT^>G7x
已知13x^2-6xy+y^2-4x+1=0,求(x^2-xy)^5的值特别注意是求(x^2-xy)^5的值,不是(xy-x^2)^5的值
已知13x^2-6xy+y^2-4x+1=0,求(x^2-xy)^5的值
特别注意是求(x^2-xy)^5的值,不是(xy-x^2)^5的值
已知13x^2-6xy+y^2-4x+1=0,求(x^2-xy)^5的值特别注意是求(x^2-xy)^5的值,不是(xy-x^2)^5的值
13x^2-6xy+y^2-4x+1=0
9x²-6xy+y²+4x²-4x+1=0
(3x-y)²+(2x-1)²=0
∵(3x-y)²≥0 (2x-1)²≥0
所以3x-y=0 ①
2x-1=0 ②
联立①,②解得 x=1/2 y=3/2
所以(x²-xy)^5=(1/4-3/4)^5=(-1/2)^5=-1/32
晕。。。。。。。。11111
已知13X^2-6XY+Y^2-4X+1=0,求(XY-X^2)^5的值.
已知13x^2-6xy+y^2-4x+1=0,求(xy-x^2)^3的值.
已知x-y=6,xy=-1,求(2x+3x-2xy)-(x+4y+xy)-(3yx-2x+2y)的值
已知2/x-1/y=3,则(2y-x+4xy)/(3x-6y-5xy)=?
已知1/x-1/y=2,求3x+7xy-3y/2x-3xy-2y答案是1/x-1/y=2(y-x)/xy=2 得:x-y=-2xy(3x+7xy-3y)/(2x-3xy-2y)=[3(x-y)+7xy]/[2(x-y)-3xy]=(-6xy+7xy)/(-4xy-3xy)=xy/(-7xy)=-1/7 谁能帮我解释一下=[3(x-y)+7xy]/[2(x-y)-3xy]=(-6xy+7xy)/(-4xy-3xy) 是怎
已知13X^2-6XY+Y^2-4x+1=0,求(x+y)^13乘以x^10
已知:13x^2-6xy+y^2-4x+1=0,求(x+y)^2013*x^2011
(1)已知x+y=6,xy=-3,x^2y+xy^2=(2)x*[2-(1/x)]+(x/x^2-2x)*(x^2-4)
.已知:x-y=1,xy=-2.求:(-2xy+2 x+3y)-(3xy+2y-2x)-(x+4y+xy)的值
已知|X-3Y-1|+(X+Y)^=4XY,求X/Y的值另外还有道:已知X^2+Y^2+6X-4Y+13=0,①求X,Y的值②X^2-Y^2的值已知|X-3Y-1|+(X+Y)^2=4XY,求X/Y的值
已知x y=1,xy=-3,求2xy-4x 4(y-2(xy-x))
已知x+y=6,xy=4,求x^2y+xy^2的值~
已知xy+x-y+1=6,(1-x^2)(1-y^2)+4xy=48,求xy-x+y+1的值!一定要今天
已知xy+x-y+1=6,(1-x^2)(1-y^2)+4xy=48,求xy-x+y+1的值
已知xy+x-y+1=6,(1-x^2)*(1-y^2)+4xy=48,求xy-x+y+1的值
已知x-y=3,xy=1,求(-2x+2x+3y)-(3xy+2y-2x)-(x+4y+xy)
1.已知x+y=-4,xy=3,求5(2分之1xy+2y)+[6x-(2xy+y-3x)]的值2.已知(x+3)^2+|x-y+10|=0求代数式5x^2y-[2x^2y-(3xy-xy^2)-3x^2]-2xy^2-y^2的值
已知1/x - 1/y = 2,求3x+7xy-3y / 2x-3xy-2y的值1/x-1/y=2(y-x)/xy=2 得:x-y=-2xy(3x+7xy-3y)/(2x-3xy-2y)=[3(x-y)+7xy]/[2(x-y)-3xy]=(-6xy+7xy)/(-4xy-3xy)=xy/(-7xy)=-1/71/x-1/y=2到(y-x)/xy=2 是怎么变化的..