(4X+6Y)/(5Y-6X)=3Y/(6X+7Y)这个有解吗?怎么解,用到哪些公式?越详细越好.
来源:学生作业帮助网 编辑:作业帮 时间:2024/10/10 03:08:25
xNP_%bMkƤ;4D]]r1\*S1ZPcJ-09xO_9771R!BtTH\HHEylw
V*hQ%{P3sGxoEϺ#*13\.)ζI.F*n[X;AZ9*mս0b!nYO@='5|@=]4(<N *
&yRԏh[q|ɯ>Y9xS7bQ&z kUk-'6Q4v*16v)zd
@ߠZ6˞cr*gd?%*p F^J:]2-S,_5էg})0?`
(3x-4y)(5x-4y)-(7x-8y)(6y-5x)
{3(x+y)-4(x-y)=4 {x+y/2 + x-y/6=1
x+y/2+x-y/3=6,4(x+y)-3(x-y)=-20
{(x+y)/2+(x-y)/3=6 4(x+y)-3(x-y)=-20
4(x+y)-3(x-y)=-20,2/x+y+3/x-y=6
x+y/2+x-y/6=5 2(x+y)-3(x-y)=-2
6(x-y)-2(x+y)=14 3(x-y)+(x+y)=5
(x+y)/2- x-y/2=6 3(x+y)=4(x-y)
x+y/3+x-y/2=6 4(x+y)-2(x-y)=40
(x+y)^6/(x+y)^4-(x-y)^5/(x-y)^3 化简 ..
4x-2y-6y*-y-3x+5y* *=2 就是平方
把(x-y)看作一个整体,化解:5(x-y)+2(x-y)-4(x-y)= 3(x-y)把(x-y)看作一个整体,化解:5(x-y)+2(x-y)-4(x-y)=3(x-y)²-4(x-y)+7(x-y)-6(x-y)²=
{x+y=1 ,xy=-6{x(2x-3)=0,y=x²-1{(3x+4y-3)(3x+4y+3)=0,3x+2y=5{(x-y+2)(x+y)=0,x²+y²=8{(x+y)((x+y-1)=0,(x-y)(x-y-1)=0
(3x+4y)(5x-6y)=?
把(x-y)看做一个整体,合并同类项5(x-y)+2(x-y)-4(x-y)=3(x-y)次方-4(x-y)+7(x-y)-6(x-y)次方=
若5x+3y=3x+4y=x+2y+6,则x+y=___
填空题 x+y/4=x-y/6=3x+12y+5/8 x= y=
解方程组 X+Y/2+X-Y/3=6 4[X+Y]-5[X-Y]=2