Question

Tìm x : 

8 x 6 + 288 : ( x - 3 ) mũ 2 = 50

Answer 1

Ta có : 8 . 6 + 288 : (x - 3)² = 50

=> 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

=> không tìm được x thỏa mãn điều kiện trên

Answer 2

8.6+288:(x-3)² = 50

<=> 48+288:(x-3)² = 50

<=> 288:(x-3)² = 50-48 = 2

<=> (x-3)² = 2.288 = 576 = 24²

<=> \(\orbr{\begin{cases}x-3=24\\x-3=-24\end{cases}}\)

<=> \(\orbr{\begin{cases}x=24+3=27\\x=3-24=-21\end{cases}}\)

Vậy x thuộc { 27 ; -21 }

Answer 3

\(8\cdot6+288:\left(x-3\right)^2=50\)

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

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

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

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

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

\(Th1:x-3=12\)\(Th2:x-3=-12\)

\(x=12+3=15\)\(x=-12+3=-9\)

Vậy \(x=15\)hoặc \(x=-9\)

Answer 4

\(8\times6+288:\left(x-3\right)^2=50\)

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

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

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

\(x^2:3^2=144\)

\(x^2=144:9\)

\(x^2=16\)

\(x=4\)

Answer 5

x = 12 nha bạn

Answer 6

= 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 = 122

x - 3 = 12 

x = 12 + 3 = 15