解方程组{ 3x-4y(x-y)=3 { 2x-3y=1
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/14 20:59:28
xN0_eWղv[b\y/"1Y͌|FP. DBL4Qlv+XBpIi{jZA<秓mє
h`DB6+
k"\)EM*4D\x_.!J2!展;Ю5*ksŰza,Ѝ8\ 3za'
ЩI&R:҂E:T
X a%/j{n=?~x6 Ͻ̰r
:E js6Zn=X],>Dž_/"pj9{|-zlM8BMC/b|Cy]k("WӯX*( >
解方程组{ 3x-4y(x-y)=3 { 2x-3y=1
解方程组{ 3x-4y(x-y)=3 { 2x-3y=1
解方程组{ 3x-4y(x-y)=3 { 2x-3y=1
{ 3x-4y(x-y)=3 ,2x-3y=1
2x-3y=1,得x-y=(1+y)/2
3x-4y(x-y)=3,代入x-y=(1+y)/2,
得3x-2y(1+y)=3
3x-2y-2y²=3
4y+4y²=6x-6
2x-3y=1,得6x=3+9y
4y+4y²=6x-6,代入6x=3+9y,得4y²=5y-3
4y²-5y+3=0
(2y-5/4)²=25/16-3
(2y-5/4)²=-23/16
因二次方只能等于0或正数,而这里算出的是负数,
所以这方程组是不合理的,请提问者注意题目了.
x=11/4,y=3/2或x=-1/4,y=-1/2
x=5 Y=10
选我!!!!!!!
解方程组{ 3x-4y(x-y)=3 { 2x-3y=1
解方程组x+y/3=x-y/4 2x+3y=11
解方程组3x+5(x+y)=2 3y-2(x+y)=4
解方程组:{4x+5(x-y)=30,4y-3(x-y)=6
解方程组,x+y/2=3x-2y=10+6x+y/4,
方程组4=x+y,8=3x-y求x,y的解
解方程组 y=2x x+y=3
解方程组x=3y x+y=16
解方程组:{x+y=3,x-y=5
解方程组:2(x +y)-3(x-y)=3;4(x+ y)+ 3(x-y)=15
解方程组;x+y/2=x-y/3=6 4(x+y)-3(x-y)=-20
解方程组24/(x+y) +24/(x-y) = 7/3 ,8/(x+y) +18/(x-y) = 4/3
解方程组⑴(x+y)/2-(x-y)/3=6,⑵3(x+y)=4(x-y)
解方程组 x-y/3-x+y/4=2 x-y/6-x+y/8=3
解方程组4(x+y)-3(x-y)=14;(x+y)/2+(x+y)/3=6
解二元一次方程组3(x+y)-4(x-y)=4 x+y/2+x-y/6=1
解方程组2(x-y)/3-x+y/4=-1 6(x-y)-4(2x-y)=16
解方程组3(x+y)-4(x-y)=4和(x+y)/2+(x-y)/6=1kkkkkkkk