\(\left|x-6\right|=x-6\)
\(\Leftrightarrow\orbr{\begin{cases}x-6=x-6\\x-6=6-x\end{cases}}\)
\(\Leftrightarrow\orbr{\begin{cases}0x=0\\2x=12\end{cases}}\)
\(\Rightarrow\orbr{\begin{cases}x\in\forall Z\\x=6\end{cases}}\)
tim x,y thuoc z biet: x - y = 6 - 2xy
tim x,y thuoc z biet: x - y = 6 - 2xy
tim x thuoc Z biet 6-3x chia het cho x+3
tim x,y thuoc z biet
-24/-6 = x/3 = 4/y^2 = z^3/-2
1 )Tim x, y thuoc Z
x + y = x.y
2) Tim x thuoc Z
(x + 1)+(x+3)+(x+5)+...+(x+99)=0(x-3)+(x-2)+(x-1)+...+10+11=11-12(x-5)+7(3-x)=530(x+2)-6(x-5)-24x=100tim x thuoc z
(x-2) . (x-6) <0
tim x thuoc z biet:
8.(x-7)-6.(x-2)=8.6-50
cho A = 1/15 nhan 225/(8+2) + 3/14 nhan 196/(3x+6) (x thuoc Z; x khac -2 )
a) Rut gon A
b) Tim x thuoc Z de A thuoc Z
c) trong cac gia tri nguyen A tim gia tri lon nhat va gia tri nho nhat
TIm x thuoc Z
38 + 48 : x =32 . 6
