\(Do:\left|x-12\right|=\left|12-x\right|\)
⇒2014.|x−12|+(x-12)2=2013.\(\left|x-12\right|\)
⇒2014.\(\left|x-12\right|\)+(x-12)2-2013.\(\left|x-12\right|\)=0
⇒(2014-2013).\(\left|x-12\right|\)+(x-12)2=0
⇒\(\left|x-12\right|+\left(x-12\right)^2\)=0
Do: \(\left|x-12\right|\ge0,\left(x-12\right)^2\ge0\)
⇒x-12=0
⇒x=12