x²—2x+y²+6y+10=0,问x,y分别等于几
问一道数学题:已知X²+2X+Y²-6Y+10=0,求X的Y次方
(x+2y-1)²等于几?
y*y*y*y+2x*x*x*x=4x*x*y 求x等于几,y等于几,写出所有选项!
已知实数x, y满足x²+y²-2x+6y+10=0,求y∧-x.
已知:x²y²-2x+6y+10=0则x+y=
x²-2x+y²+6y+10=0,则x+y=?
y²+3x=7,y³+x=3,求y等于几.
x^2+6x+y^2+4x+10=0,则x+y等于多少?
(x-y)的四次方(x-y)-2(x-y)²(y-x)³等于?
若(x-y)/(x+y)=3 则(x+2y)/(6x-7y)等于
(x-y)³(x-y)²(y-x)等于多少
X与Y是无理数,X+Y=2,X,Y各等于几?