|1-√2|+√(-3)^2+√2=√2-1+3+√2=2+2√2(x-1)^2-(x+1)(x-4)=6 x^2-2x+1-x^2+3x+4=6 x=6-1-4 x=1如果帮到你，请记得采纳，O(∩_∩)O谢谢
2根号2＋20.2
