`<=> {(x+1=0), (2x-y=0):}`
`<=> {(x=-1), (y=-2):}`
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|x-3| + |y-2x | =0 |x| + 3|2x -x ² | =0 |5x ² -5 | + 4|y-7 | =0 ||x +1 | + |y-5 |=0 |x ² -1| + |y-1| =0 |x-1 | +|x ²-x |=0
tìm x,y bt
a,(x-1)^2+(2x+y-1)^4=0
b,x^2+2xy+3y^2=0
c,2x^2+2x+y^2-2xy+1=0
Tìm x,y nguyên:
1) (2x-1).(2x-5)<0
2) (3x+1).(5-2x)>0
3) (3-2x).(x+2)>0
4) (2-x).(x+1)=|y+1|
5) (x+3).(1-x)=|y|
6) (x-2).(5-x)=|2y+1|+2
7)(x-3).(x-5)+|y-2|=0
8) (x-2).(5-x)-|y+1|=1
GIÚP MK VS MK TICK CHO
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Bài 1: Tìm x,y
a, | x - 1 | + | 2x - y + 3 | = 0
b, | x - y | + | x + y - 2 | = 0
c, | x + y - 1 | + | 2x - 3y | = 0
Ai giúp em với🥺 em đang cần gấp lắm😭
(2x+5) (3y -13) = 31
xy + 2x + y + 11 = 0
xy -x - y -1 = 0
1/x + 1/y = 1/4
Tìm x,y
a,|x+2|+|2y-1|=0
b,|x-y|+|2x+3|=0
c, |2x+y|+|y+(1:4)|=0
Mông mn ghi cả lời giải
xy+x+y+1=0
xy-x-y=0
xy-x-y-1=0
xy-x-y+1=0
xy+2x+y+11=0
Tìm x biết:
a) | 2x - 5 | + | y - 3 | = 0
b. | 2x - y + 1| ^3 + ( 2 - 3y )^2 = 0
c. | x + 1 / 1x2 | + |x + 1/2x3 | +.....+ |x+1/99+100 | = 100x
Tìm x biết:
a) | 2x - 5 | + | y - 3 | = 0
b. | 2x - y + 1| ^3 + ( 2 - 3y )^2 = 0
c. | x + 1 / 1x2 | + |x + 1/2x3 | +.....+ |x+1/99+100 | = 100x
Tìm x biết:
a) | 2x - 5 | + | y - 3 | = 0
b. | 2x - y + 1| ^3 + ( 2 - 3y )^2 = 0
c. | x + 1 / 1x2 | + |x + 1/2x3 | +.....+ |x+1/99+100 | = 100x