x²+2x+y²-6+10＝0-搜答案-智慧作业帮

4X^2+Y^2-4X-6Y+10=0(4X^2-4X+1)+(Y^2-6Y+9)=0(2X-1)^2+(Y-3)^2=0平方大于等于0,相加等于0,若有一个大于0,则另一个小于0,不成立所以两个都等

7.x*x+2*x+y*y-6y+10=(x+1)*(x+1)+(y-3)*(y-3)=0x+1=0且y-3＝0所以x*y＝-38.再加个4*x就好了11.原式＝（x-2）*（x-2）+（y+3）*（

好吧题目应该是x^2+6x+y^2+4y+10=0解体是配方了把10分成1+9配成（x+3）^2+（y+1）^2=0平方大于等于0所以x+3=0,y+1=0,嗯x+y=-4了,希望可以帮到你.

很多数学符号,还是写出来方便.

(x²-6x+9)+(y²+2y+1)=0(x-3)²+(y+1)²=0所以x=3,y=-1原式=2x²-4xy+2y²+x²-y

由x²-2x+y²+6y+10=0得,（x-1）²+（y+3）²=0则x=1,y=-3—9(x+y)²+(3x-2y)(2y+3x)=-9*（-2）&

x²-2x+y²+6y+10=0x²-2x+1+y²+6y+9=0(x-1)²+(y+3)²=0x-1=0y+3=0∴x=1y=-3∴x+y

x^2+2x+y^2-6y+10=0（x+1)²+（y-3)²=0∴x=-1,y=3(x+y)²=（-1+3）²=4

-8(2x-y)-{7x-[6x+2y-(10x-8y)]}=-16x+8y-[7x-(6x+2y-10x+8y)]=-16x+8y-(7x-6x-2y+10x-8y)=-16x+8y-7x+6x+2

x^2+y^2-6x-2y+10=0x^2-6x+9+y^2-2y+1=0(x-3)^2+(y-1)^2=0x=3,y=1(x+y)/(x-y)=4/2=2

原式=x^2-2x+1+y^2+6y+9=0=(x-1)^2+(y+3)^2=0∴x=1,y=-3不懂再问

x²-2x+y²+6y+10=0x²-2x+1+y²+6y+9=0(x-1)²+(y+3)²=0x-1=0y+3=0∴x=1y=-3∴x+y

x^2-2x+y^2+6y+10=0(x-1)^2+(y+3)^2=0x=1y=-3(x-y)/(x+y)=4/(-2)=-2

x方+2x+y方-6y+10=0x²+2x+1+y²-6y+9=0（x+1）²+（y-3）²=0所以（x+1）²=0,（y-3）²=0x+1

x^2+2x+y^2+6y+10＝0x^2+2x+1+y^2+6y+9＝0(x+1)^2+(y+3)^2＝0(x+1)^2=0,(y+3)^2＝0x=-1,y=-3x+y=-1-3=-4

等于.-3y-10x

4x^2+y-4x-6y+10=0(2x-1)^2+(y-3)^2=0x=1/2y=3y/x-x/y=6-1/6=35/6