Với điều kiện đã cho thì không tìm được $x,y,z$ cụ thể bạn nhé.

x2−6x+y2+10y+34=−(4z−1)2
x^2-6x+9+y^2+10y+25+(4z-1)^2=0x2−6x+9+y2+10y+25+(4z−1)2=0
(x-3)^2+(y+5)^2+(4z-1)^2=0(x−3)2+(y+5)2+(4z−1)2=0
{nghiempt}x-3=0\\y+5=0\\4z-1=0
{nghiempt}x=3\\y=-5\\z={1}{4}

x²-6x+y²+10y+34=-(4z-1)²

=>x²-6x+9+y²+10y+25+(4z-1)²=0=B

=>(x-3)²+(y+5)²+(4z-1)²=0

với mọi x,y,z ta có :

(x-3)²>=0

(y+5)²>=0

(4z-1)²>=0

=>(x-3)²+(y+5)²+(4z-1)²>=0

hay B>=0

dấu bằng xảy ra khi (x-3)²=0 => x-3=0  =>x=3

=>(y+5)²=0 =>y+5=0  =>y=-5

=>(4z-1)²=0 =>4z-1=0  => z=1/4

Vậy y=-5

\(x^2-6x+y^2+10y+34=-\left(4z-1\right)^2\)

\(\Leftrightarrow\left(x^2-6x+9\right)+\left(y^2+10y+34\right)+\left(4z-1\right)^2=0\)

\(\Leftrightarrow\left(x-3\right)^2+\left(y+5\right)^2+\left(4z-1\right)^2=0\)

\(\Leftrightarrow\left\{{}\begin{matrix}\left(x-3\right)^2=0\\\left(y+5\right)^2=0\\\left(4z-1\right)^2=0\end{matrix}\right.\Leftrightarrow\left\{{}\begin{matrix}x=3\\y=-5\\z=\dfrac{1}{4}\end{matrix}\right.\)

Vậy........

Giúp mình với nha.

ko pit mà giúp 

Kaitou Kid ơi k mik vs

\(x^2-6x+y^2+10y+34=-\left(4z-1\right)^2\)

\(x^2-6x+9+y^2+10y+25+\left(4z-1\right)^2=0\)

\(\left(x-3\right)^2+\left(y+5\right)^2+\left(4z-1\right)^2=0\)

\(\left[\begin{array}{nghiempt}x-3=0\\y+5=0\\4z-1=0\end{array}\right.\)

\(\left[\begin{array}{nghiempt}x=3\\y=-5\\z=\frac{1}{4}\end{array}\right.\)

\(x^2-6x+y^2+10y+34=-(4z-1)^2 \\\Leftrightarrow (x^2-6x+9)+(y^2+10y+25)+(4z-1)^2=0 \\\Leftrightarrow (x-3)^2+(y+5)^2+(4z-1)^2=0\)

Ta có:

\((x-3)^2\geq 0 \ \forall \ x;(y+5)^2\geq 0 \ \forall \ y;(4z-1)^2\geq 0 \ \forall \ z \\\Rightarrow (x-3)^2+(y+5)^2+(4z-1)^2\geq 0\)

Dấu '=' xảy ra \(\Leftrightarrow\left\{{}\begin{matrix}x-3=0\\y+5=0\\4z-1=0\end{matrix}\right.\Leftrightarrow\left\{{}\begin{matrix}x=3\\y=-5\\z=\dfrac{1}{4}\end{matrix}\right.\)

Vậy giá trị của y thỏa mãn là -5