Đặt \(a=5-2x;b=2-3x\)
\(\Rightarrow a^4+b^4=\left(a+b\right)^4\)
\(\Leftrightarrow4a^3b+6a^2b^2+4ab^3=0\)
\(\Leftrightarrow2ab\left(2a^2+3ab+2b^2\right)=0\)
\(\Leftrightarrow\left[{}\begin{matrix}2\left(5-2x\right)\left(2-3x\right)=0\\2\left(5-2x\right)^2+3\left(5-2x\right)\left(2-3x\right)+2\left(2-3x\right)^2=0\end{matrix}\right.\)
\(\Leftrightarrow\left[{}\begin{matrix}20-30x-8x+12x^2=0\\50-40x+4x^2+30-45x-12x+18x^2+8-24x+18x^2=0\end{matrix}\right.\)
Đến đây bạn tự giải nốt