已知x=(根号3-根号2)⼀(根号3+根号2),y=(根号3+根号2)⼀(根号3-根号2)

2025-02-25 18:06:59
推荐回答(2个)
回答1:

x=(根号3-根号2)/(根号3+根号2)=5-2√6
y=(根号3+根号2)/(根号3-根号2)=5+2√6
x=1/y
y+1/y=x+y=10

y/x^2+x/y^2
=y^3+1/y^3
=(y+1/y)(y^2+1/y^2-1)
=(y+1/y)((y+1/y)^2-3)
=10*(10^2-3)
=10*97
=970

回答2:

x=y=根号3+根号4,