已知x=√3-√2,求x6+﹙2√2﹚x-x4+x3-﹙2√3﹚x2+2x+√2

2025-01-03 08:05:09
推荐回答(1个)
回答1:

∵ x=√3-√2
∴x-√3=-√2,√3=x+√2
∴x²-2√3x+1=0,x²+2√2x-1=0
∴x^6+﹙2√2﹚x^5-x^4+x^3-﹙2√3﹚x^2+2x+√2
=x^4(x²+2√2x-1)+x(x²-2√3x+1)+x+√2
=x+√2
=√3