Pt tương đương:2015x-2014-2\(\sqrt{2017x-2016}\)=-X^2<=>2017x-2016-2\(\sqrt{2017x-2016}\)+1-2x+2-1=-X^2
<=>2017x-2016-2\(\sqrt{2017x-2016}\)+1=-x^2+2x-1
<=>(\(\sqrt{2017x-2016}\)-1)^2=-(x-1)^2
Rồi đánh giá(\(\sqrt{2017x-2016}\)-1)^2>=0
-(x-1)^2=<0 ( Ta thấy chỉ xảy ra khi bằng 0)
=>x-1=0<=>x=1