2分之1(4x+2y)-2(x-y)+3x 化简!
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2分之1(4x+2y)-2(x-y)+3x 化简!
2分之1(4x+2y)-2(x-y)+3x 化简!
2分之1(4x+2y)-2(x-y)+3x 化简!
2分之1(4x+2y)-2(x-y)+3x
=2X+Y-2X+2Y+3X
=3X+3Y
计算 x-2分之x方+1-2-x分之3-4x (x+y)x方-y方分之x方+y-x分之y方
2分之x+y+3分之x-y;4(x+y)-(x-y)谢谢了,
3分之2(x-y)-4分之x+y=-1 8(x+y)-4(2x-y)=16
3分之2(X-Y)-4分之X+Y=-1,3(X+Y)-2(X-Y)=16
计算:y-x分之x+y+x-y分之y-y-x分之2x-y
+3分之x-y=-5,15分之x+y-2分之x-y=-1
2分之x+3分之y=7 3分之x-4分之y=-1
|x-3y-1|+(x+y)^2=4xy求y分之x
2x分之1- x+y分之1(2x分之x+y -x-y)化简
-(5x+y)-7(x-y) -2分之1(x+y)+4分之1(x+2y) 4x-2(x-2) -2x-(3x-1) x-(5x-2y)+2(2x-y)
(1)ac分之2bc (2)xy²分之(x+y)y (3)(x+y)^2/x^2+xy (4)(x-y)^2/x^2-y^2
3分之x-2y=4分之2x-3y-1=6分之5x-y+2
2x-3分之x+()=2x-3分之1x-2y分之x的平方-()=x-2y分之4y的平方
4分之3x+2y=5分之2x+y=6分之x-y+1的解法.
2分之x+y=5分之3x+4y,2分之x+y=1
4分之3x+2y等于5分之2x+y等于6分之x-y+1
解方程组 4(x-y-1)=3(1-y)-2,二分之x+三分之y=23分之2(x-y)-4分之X+Y=-1,6(X+Y)-4(2X-Y)=16
y-x分之2x-3y-x-y分之x+2y