作业帮y=x(0:10:90:100)是什么意思
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/07 11:16:18
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）*（
x-y-3绝对值+(2x+2y+10)的平方=0X-Y-3=0X-Y=32X+2Y+10=0X+Y=-5(x+y)(x-Y)=3X(-5）=-15
(100X+Y)-(10Y+X)=(10Y+X)-(10X+Y)100X+Y-10Y-X=10Y+X-10X-Y99X-9Y=9Y-9X-18Y=-108XY=6X把Y=6X代入X+Y=7得X+6X=
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
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
//语言有严格的语法,楼主写错了不少.//建议改正程序,再理解.#include<stdio.h>voidmain(){\x09inta=100,x=10,y=20,ok1=5,ok2=0
x=10/3y=-10/3
2x-3y=10x+y=02x-3y=103x+3y=02x+3x=10x=2y=-x=-2
(x+y)(x+y-10)+25=0设x+y=aa(a-10)+25=0a²-10a+25=0(a-5)²=0a=5∴x+y=5x-y=3x=4y=1
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^2+y^2-8x-10y+41=0x^2-8x+16+y^2-10y+25=0(x-4)^2+(y-5)^2=0所以x=4,y=5x/y+y/x＝4/5+5/4=0.8+1.25=2.05
x^2+y^2-8x+10y+41=0(x-4)^2+(y+5)^2=0x=4,y=-5x+y=-1(x+y)^2013=-1
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+y^2-10x-12y+61=0(x²－10x＋25)＋(y²－12y＋36)=0(x－5)²＋(y－6)²=0因为(x－5)²与(y－6)&
m²+n²=0则有m=0n=0运用这个道理x²+y²-6x+10y+34=0x²-6x+y²+10y+34=0x²-6x+9才能拼
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