Ta có |x-2|+2x+1=0
\(\Leftrightarrow\left|x-2\right|=-1-2x\)
\(\Leftrightarrow\orbr{\begin{cases}x-2=-1-2\\x-2=1+2\end{cases}}\)
\(\Leftrightarrow\orbr{\begin{cases}x=-1\\x=3+2=5\end{cases}}\)
Vậy \(x\in\left\{-1;5\right\}\)
@ Học tốt !!!
## Chiyuki Fujito
Tim x biet: (\(2x^2+7\))x(\(-3x-9\))<\(0\)
Giup mik voi ai nhanh mik tik cho^-^
Nho lam day du ho mik nhe,Thanks=))
tim x biet
/ 2x+1/+/x-2/=0
/x+5/=2x-1
/x+1/+/x+2/=/5x-3/
giup mik vs mai mik nop roi
Tim x nguyen , biet : |3x-2| -|x+1| = 0
Giup mk nhe !!!!
tim x biet
/x+2/=/x-2/
minh biet dap an la 0 nhung trinh bay kieu gi
giup minh nhe, nhanh len minh can gap
a) tim so nguyen x sao cho : 4x+5 chia het cho 2x-1
b) tim so nguyen x va y biet : xy+3x-2y -11 = 0
giup mik nha ! ai nhanh nhat mik tick cho !
giai giup em nha
tim x biet (2x+1)+ (2x+2)...+(2x+2015)=0
tìm x
Tim x,y nguyen , biet :
(x-10)^2 +(2+x)^2 =0
Nhanh giup mk nhe !!!
Minh moi vao nhom giup minh voi :
Tim x va y biet : (2x+1)(y-5)=12
La toan lop 6 nhe !
tim x biet:
a.2x+2x+1+2x+2+2x+3-480=0
b.13/28.x=1/7.[555/222+4444/12221+33333/244442+11/330+13/60]
tinh ro ra nhe.
giup minh nhe,chieu phai nop roi.
