(3y-1)^2=(y-3)^2
问题描述:
(3y-1)^2=(y-3)^2
答
9Y^2 +1-6Y=Y^2 +9-6Y
8Y^2=8
Y^2=1
Y=正负1
(3y-1)^2=(y-3)^2
9Y^2 +1-6Y=Y^2 +9-6Y
8Y^2=8
Y^2=1
Y=正负1