(1)x^2+2=4√2x (2)y^2-√2/2y+1/8=0
问题描述:
(1)x^2+2=4√2x (2)y^2-√2/2y+1/8=0
答
(1) x^2+2=4(根号2)x
x^2--4(根号2)x+8=--2+8
(x--2根号2)^2=6
x--2根号2=正负根号6
x1=2根号2+根号2,x2=2根号2--根号6.
(2) y^2--(根号2)y/2+1/8=0
[y--(根号2)/4]^2=0
y1=y2=(根号2)/4.