xy满足(x+y)^2=1/4,xy=-1/2,求下列个数的值.(1)(x^2+1)(y^2+1) (2)x^4+y^4 (3)x^2-y^2 (4)x^6+y^6
来源:学生作业帮助网 编辑:作业帮 时间:2024/09/08 14:54:58
x)|{m5*+5l
Mt**mu
tmlzi';V=
{0|HUijjT)
#͊88
c H(adElɰl;lɧ5o~ھigK^.aiPF 180Y㢧Kz6.}kƧm/:7=;6O}0EC3> %v
若xy满足x²+2x+y-2√y-1=-1,求xy,
正数x,y满足(1+x)(1+y)=2,求xy+1/xy最小值
若正数xy满足x+4y=1,(x+y)/xy最小值
若x,y满足x^+2y^-2xy+1=0,求xy的值
已知实数xy满足x²﹢y²-xy+2x-y+1=0求xy
已知正数x,y满足(1+x)(1+2y)=2,则4xy+1/xy的最小值是多少?
如果有理数x y 满足|x-1|+|xy-2|=0,求xy的绝对值
1-2/x+y=xy,4y+6x=xy.求xy的解?
已知A=5x^+2xy-4y^,B=-x^-4xy+y^,C=x^-xy+3y^其中xy满足|2x+1|+(y-4)^=0,就A-2B+C已知A=5x^+2xy-4y^,B=-x^-4xy+y^,C=x^-xy+3y^其中xy满足|2x+1|+(y-4)^=0,求A-2B+C-2B+C的值
已知,xy满足y²=-x²+2x-5/4-y,代数式xy/x+y=
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
X、Y满足XY=K,xy是什么关系?
X、Y满足XY=K,xy是什么关系?
已知实数xy,满足10x²-2xy+y²+6x+1=0,求x+y
先化简再求值3(2x^2y-xy^2)-(5x^2-4xy^2)其中x y 满足|x+2|+(y-1/2)=0
已知xy满足约束条件y=2 2X+y
已知实数x、y满足xy>0,且8/xy+1/x+1/y=1,
若正数xy满足x+y=xy,则x+4y的最小值