Question

\(\left(x-7\right)^4+\left(x-8\right)^4=\left(15-2x\right)^4\)

Answer 1

https://olm.vn/hoi-dap/question/437169.html 

bạn tham khảo

Answer 2

Ta có:

\(\left(x-7\right)^4+\left(x-8\right)^2=\left(15-2x\right)^4\)

Dat \(x-7=a\). Khi do:

\(a^4+\left(a-1\right)^4=\left(2x-1\right)^4\)

\(\Leftrightarrow a^4+a^4-4a^3+6a^2-4a+1=16a^4-32a^3+24a^2-8a+1\)

\(\Leftrightarrow a\left(a-1\right)\left(7a^2-7a+2\right)=0\)

\(\Leftrightarrow\orbr{\begin{cases}a=0\\a=1\end{cases}}\)

Dến dây bạn tu giải nhé,,,