(1)x^2+2=4√2x (2)y^2-√2/2y+1/8=0
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(1)x^2+2=4√2x(2)y^2-√2/2y+1/8=0(1)x^2+2=4√2x(2)y^2-√2/2y+1/8=0(1)x^2+2=4√2x(2)y^2-√2/2y+1/8=0(1)x^2+
(1)x^2+2=4√2x (2)y^2-√2/2y+1/8=0
(1)x^2+2=4√2x (2)y^2-√2/2y+1/8=0
(1)x^2+2=4√2x (2)y^2-√2/2y+1/8=0
(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.
X=6开根号+8开根号 或X=8开根号-6开根号, Y= 2开根号/4前面加“—”
方法,配方法,变成(X-a)^2的形式再算,X未知数,A,常数
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