Vì \(\left\{{}\begin{matrix}\left|2x-27\right|^{2011}\text{≥0,∀x}\\\left(3y+10\right)^{2012}\text{≥0,∀y}\end{matrix}\right.\)

⇒ \(\left|2x-27\right|^{2011}+\left(3y+10\right)^{2012}\text{≥0,∀x},y\)

Dấu "=" ⇔ \(\left\{{}\begin{matrix}2x-27=0\\3y+10=0\end{matrix}\right.\)

⇒ \(\left\{{}\begin{matrix}x=\dfrac{27}{2}\\y=-\dfrac{10}{3}\end{matrix}\right.\)

Vậy ...

Ta có \(\hept{\begin{cases}\left|2x-27\right|^{2011}\ge0\forall x\\\left(3y+10\right)^{2022}\ge0\forall y\end{cases}}\Rightarrow\left|2x-27\right|^{2011}+\left(3y+10\right)^{2022}\ge0\forall x;y\)

Dấu "=" xảy ra <=> \(\hept{\begin{cases}2x-27=0\\3y+10=0\end{cases}}\Rightarrow\hept{\begin{cases}x=\frac{27}{2}\\y=-\frac{10}{3}\end{cases}}\)

Vậy x = 27/2 ; y = -10/3 là giá trị cần tìm

ta có |2x-27| > hoặc = 0=> |2x-27|^2011> hoặc = 0

(3y+10)^2012> hoặc 0 mà |2x-27|^2011+(3y+10)^2012=0 

=>2x-27=0 hoặc 3y+10=0=>2x=27 hoặc 3y=-10

=>x=13,5 hoặc x=-10/3

vậy .............................

\(\left|2x+27\right|^{2011}+\left(3y+10\right)^{2012}=0\)

\(\hept{\begin{cases}\left|2x-27\right|^{2011}\ge0\forall x\\\left(3y+10\right)^{2012}\ge0\forall y\end{cases}}\Rightarrow\left|2x-27\right|^{2011}+\left(3y+10\right)^{2012}\ge0\forall x;y\)

Dấu ''='' xảy ra \(x=\frac{27}{2};y=-\frac{10}{3}\)

\(\left\{{}\begin{matrix}\left|2x-27\right|^{2011}\ge0\\\left(3y+10\right)^{2012}\ge0\end{matrix}\right.\Leftrightarrow\left|2x-27\right|^{2011}+\left(3y+10\right)^{2012}\ge0\)

Mà \(\left|2x-27\right|^{2017}+\left(3y+10\right)^{2012}=0\)

\(\Rightarrow\left\{{}\begin{matrix}\left|2x-27\right|^{2011}=0\\\left(3y+10\right)^{2012}=0\end{matrix}\right.\Rightarrow\left\{{}\begin{matrix}x=13,5\\y=\dfrac{-10}{3}\end{matrix}\right.\)

Vậy...

\(\left|2x-27\right|^{2011}+\left(3y+10\right)^{2012}=0\)

\(\left|2x-27\right|^{2011}\ge0;\left(3y+10\right)^{2012}\ge0\)

Dấu "=" xảy ra khi:

\(\left|2x-27\right|^{2011}=0\)

\(\Rightarrow\left|2x-27\right|=0\Rightarrow2x-27=0\Rightarrow2x=27\Rightarrow x=\dfrac{27}{2}\)

\(\left(3y+10\right)^{2012}=0\)

\(\Rightarrow3y+10=0\Rightarrow3y=-10\Rightarrow y=\dfrac{-10}{3}\)

Ta thấy:

\(\left|2x-27\right|\ge0\Rightarrow\left|2x-27\right|^{2011}\ge0\\ \left(3y+10\right)^{2012}\text{ có mũ chẵn}\Rightarrow\left(3y+10\right)^{2012}\ge0\\ \Rightarrow\left|2x-27\right|^{2011}+\left(3y+10\right)^{2012}\ge0\)

Dấu \("="\) xảy ra khi

\(\left\{{}\begin{matrix}\left|2x-27\right|^{2011}=0\\\left(3y+10\right)^{2012}=0\end{matrix}\right.\\ \Rightarrow\left\{{}\begin{matrix}\left|2x-27\right|=0\\3y+10=0\end{matrix}\right.\\ \Rightarrow\left\{{}\begin{matrix}2x-27=0\\3y+10=0\end{matrix}\right.\\ \Rightarrow\left\{{}\begin{matrix}2x=27\\3y=10\end{matrix}\right.\\ \Rightarrow\left\{{}\begin{matrix}x=\dfrac{27}{2}\\y=\dfrac{10}{3}\end{matrix}\right.\)

Vậy \(x=\dfrac{27}{2}\), \(y=\dfrac{10}{3}\)

X=?

Y=?

Tìm các giá trị của x, y thỏa mãn: |2x-27|²⁰¹¹+(3y+10)²⁰¹²=0

Giải:Vì \(\hept{\begin{cases}\left|2x-27\right|^{2011}\ge0\\\left(3y+10\right)^{2012}\ge0\end{cases}}\)\(\Rightarrow\left|2x-27\right|^{2011}+\left(3y+10\right)^{2012}\ge0\)

Kết hợp với giả thiết ta thấy \(\left|2x-27\right|^{2011}+\left(3y+10\right)^{2012}=0\) nên:

\(\hept{\begin{cases}\left|2x-27\right|^{2011}=0\\\left(3y+10\right)^{2012}=0\end{cases}}\)\(\Rightarrow\hept{\begin{cases}2x-27=0\\3y+10=0\end{cases}}\)\(\Rightarrow\hept{\begin{cases}x=\frac{27}{2}\\y=-\frac{10}{3}\end{cases}}\)

Vậy x=\(\frac{27}{2}\);y=\(-\frac{10}{3}\) thỏa mãn bài toán

Sửa lại:
\(\left|2x-27\right|^{2011}+\left(3y+10\right)^{2012}=0\)

\(\Rightarrow\left|2x-27\right|^{2011}=0\) và \(\left(3y+10\right)^{2012}=0\)

+) \(\left|2x-27\right|^{2011}=0\)

\(\Rightarrow\left|2x-27\right|=0\)

\(\Rightarrow2x-27=0\)

\(\Rightarrow2x=27\)

\(\Rightarrow x=13,5\)

+) \(\left(3y+10\right)^{2012}=0\)

\(\Rightarrow3y+10=0\)

\(\Rightarrow3y=-10\)

\(\Rightarrow y=\frac{-10}{3}\)

Vậy \(x=13,5;y=\frac{-10}{3}\)

Ta có:

\(\left|2x-27\right|^{2011}+\left(3y+10\right)^{2012}=0\)

\(\Rightarrow\left|2x-27\right|^{2011}=0\) và \(\left(2y+10\right)^{2012}=0\)

+) \(\left|2x-27\right|^{2011}=0\)

\(\Rightarrow\left|2x-27\right|=0\)

\(\Rightarrow2x-27=0\)

\(\Rightarrow2x=27\)

\(\Rightarrow x=13,5\)

+) \(\left(2y+10\right)^{2012}=0\)

\(\Rightarrow2y+10=0\)

\(\Rightarrow2y=-10\)

\(\Rightarrow y=-5\)

Vậy \(x=13,5;y=-5\)