x^2-  \(\frac{666}{24+13}=\frac{666}{37}=18\)

x²= 18+7

x²=25

=>x=5

tick đi nhé

x²  - 666/24 + 13 = 666/37 = 18

x² = 18 + 7

x² = 25 

=> x = 5 hoặc x = - 5

 tick cho mình nha

\(...\Rightarrow\left[{}\begin{matrix}288:\left(x-3\right)^2-2=0\\x^2-169=0\end{matrix}\right.\) \(\Rightarrow\left[{}\begin{matrix}288:\left(x-3\right)^2=2\\x^2=169\end{matrix}\right.\)

\(\Rightarrow\left[{}\begin{matrix}\left(x-3\right)^2=288:2\\x^2=13^2\end{matrix}\right.\) \(\Rightarrow\left[{}\begin{matrix}\left(x-3\right)^2=144=12^2\\x^2=13^2\end{matrix}\right.\)

\(\Rightarrow\left[{}\begin{matrix}x-3=12\\x-3=-12\\x=13\\x=-13\end{matrix}\right.\) \(\Rightarrow\left[{}\begin{matrix}x=15\\x=-9\\x=13\\x=-13\end{matrix}\right.\) \(\Rightarrow x\in\left\{-9;15;\pm13\right\}\)

a: =>3(x+3)²=26+49=75

=>(x+3)²=25

=>x+3=5 hoặc x+3=-5

=>x=2 hoặc x=-8

b: =>288:(x-3)²=50-8x6=2

=>(x-3)²=144

=>x-3=12 hoặc x-3=-12

=>x=15 hoặc x=-9

x =0;

x=0;

x=0.

k cho mình nhé.

( x - 3 )2 là ( x - 3 ) .2 à

sos

:3,;>

8.6+ 288: ( x -3)\(^2\)= 503

48+ 288: (x-3)\(^2\)= 50

      288: (x-3)\(^2\)= 50-48

      288: (x-3)\(^2\)= 2

              (x-3)\(^2\)= 288:2

              (x-3)\(^2\)= 144

              (x-3)\(^2\)= 12\(^2\)

=>x- 3= 12=> x= 12+ 3x= 15

\(8.6+288:\left(x-3\right)^2=50\)

\(\Leftrightarrow48+288:\left(x-3\right)^2=50\Leftrightarrow288:\left(x-3\right)^2=2\)

\(\Leftrightarrow\left(x-3\right)^2=144\Leftrightarrow\left(x-3\right)^2=\left(\pm12\right)^2\)

TH1 : \(x-3=12\Leftrightarrow x=15\)

TH2 : \(x-3=-12\Leftrightarrow x=-9\)

Biến đổi được: (x-3)²=144=12²=(-12)²

\(\Leftrightarrow\)\(\left[{}\begin{matrix}x-3=12\\x-3=-12\end{matrix}\right.\) \(\Leftrightarrow\left[{}\begin{matrix}x=15\\x=-9\end{matrix}\right.\)