若|5x-2x-3|+(x+6y-11)^2=0成立,求x.y的值
来源:学生作业帮助网 编辑:作业帮 时间:2024/04/27 22:19:12
若|5x-2x-3|+(x+6y-11)^2=0成立,求x.y的值
若|5x-2x-3|+(x+6y-11)^2=0成立,求x.y的值
若|5x-2x-3|+(x+6y-11)^2=0成立,求x.y的值
因为|5x-2x-3|+(x+6y-11)^2=0成立,而两个非负数相加等于零,必须两个全为零,
所以{5x-2y-3=0 ①
{x+6y-11=0 ②
①式放大得:
15x-6y-9=0 ③
②+③得:
16x-20=0 ==>x=5/4
y=13/8
若2x-3y+4=0则x(x*x-1)+x(5-x*x)-6y+7
若|5x-2y-3|+(x+6y-11)X(x+6y-11)=0成立,求x,y的值
若|5x-2y-3|+(x+6y-11)X(x+6y-11)=0成立,求x,y的值,
[2(x-y)^5-8(x-y)^2(x+y)+6y(x-y)^2]÷2(x-y)^2[2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2]÷2(x-y)^2
4(x-y)-3(x-y)=9 5(x-y)+2(x-y)=11
3(x+y)-4(x-y)=11,2(x-y)+5(x+y)=27
2(2x+3y)(3x+2y)-(6x-y)(2x-5y)
若(x-y)/(x+y)=3 则(x+2y)/(6x-7y)等于
x+y/2+x-y/6=5 2(x+y)-3(x-y)=-2
因式分解x次方-y次方+5x-y+6【x-y+2】【x+y+3】
6(x-y)-2(x+y)=14 3(x-y)+(x+y)=5
若|5x-2x-3|+(x+6y-11)^2=0成立,求x.y的值
因式分解3x^2(x-y)+6x(y-x)
解方程组:3(x+y)+2(x-y)=11,6(x+y)-5(x-y)=13.
大括号x+y/2+x-y/3=11/6 4(x+y)-5(x-y)=7 快
若5x+3y=3x+4y=x+2y+6,则x+y=___
3x+2y=10.5 6x+5y=11y=x=
1.(x^3-x^2-4x+1)/(x^2-3x+2)-(x^3-2x^2-9x+21)/(x^2-5x+6)+(x^2-3x+8)/(x^2-4x+3)2.{(x^2)/(x-y)}*{y/(x+y)}-{(x^4y)/(x^4-y^4)}÷{(x^2/x^2+y^2)^2}