For example: 2-x=x-2=0, then x=2.
Y=- 1。
Then √x-6y=√(2+6)=2√2.
Question 2: (a-√ 2)? +(b+√3)? =0, then a = √ 2 and b =-√ 3.
Then a/(b- 1)=√2/2-√6/2.
Then √(a? +4b? )=√ 14
Question 3: X? - 16= 16-x? =0, then x=-4(x≠4), then y=- 1/4.
Then √xy= 1
Q: Briefly 1949 The Third Geneva Treaty on the Treatment of Prisone