Ta có : \(\left|x-4\right|^{2017}\ge0\)
\(\left|y\right|\ge0\)
=> \(\left|x-4\right|^{2017}+\left|y\right|\ge0\)
=>\(\left\{{}\begin{matrix}\left|x-4\right|^{2017}=0\\\left|y\right|=0\end{matrix}\right.\Rightarrow\left\{{}\begin{matrix}x-4=0\\y=0\end{matrix}\right.\Rightarrow\left\{{}\begin{matrix}x=0\\y=0\end{matrix}\right.\)
vậy x=0
1.Tìm x,y
a)\(\left|x\right|\)=2017
b)\(\left|x\right|\)=\(\left|2017\right|\)
c)\(\left|x\right|\)+\(\left|y\right|\)=0
d)\(\left|x+5\right|\)+\(\left|y-3\right|\)=0
f)\(\left|x+2\right|\)=\(-5\)
1)Tìm số hạng thứ 100 của dãy
a) \(1;4;-7;-10;13;16;-19;-22\);....
b)\(3;-9;15;-21;27;....\)
2)Tìm x
a)\(4+6+8+10+...+x=990\)
b)\(\left(-1\right).1+\left(-1^2\right).2+\left(-1^3\right).3+...\left(-1^{2017}\right).2017-x=0\)
\(\left|x-3y\right|^{2007}\) +\(\left|y+4\right|^{2008}\) =0
\(\left(x+y\right)^{2006}\) +2007\(\left|y-1\right|\) =0
\(\left|x-y-5\right|\) + 2007\(\left|y-3\right|^{2008}\) =0
1) Tìm x;y thuộc Z thỏa :
\(\left(x-2\right)^2+\left(y+16\right)^{2016}=0\)
Tìm GTNN
B=(x-1)^2016+\(\left|y+3\right|\) +2017
Tìm x;y \(\in\) Z
\(\left|3x+2y\right|\) +\(\left|4y-1\right|\) \(\le\) 0
\(\left|x+y-7\right|\) \(\left|xy-10\right|\) \(\le\) 0
\(\left|x-y-2\right|\) +\(\left|y+3\right|\) =0
1)tìm x\(\in\)Q biết:
a)\(\left(5\cdot x+1\right)^2=\dfrac{36}{49}\)
2)tìm x,y biết:
a)\(x^2+\left(y-\dfrac{1}{10}\right)^4=0\)
b)\(\left(\dfrac{1}{2}x-5\right)^{20}+\left(y^2-\dfrac{1}{4}\right)^{40}\le0\)
Tìm x ; y \(\in\) Z :
\(\left|x+2\right|\) +\(\left|y-4\right|\) = 0