4(X-1)^2=49(X-1)^2=49/4X-1=7/2或X-1=-7/2X1=9/2 X2=-5/2 不懂可追问,有帮助请采纳,谢谢!
4(X-1)^2=49 解:(x-1)�0�5=49/4x-1=±7/2x=9/2,或x=-5/2
4(X-1)^2=49 (X-1)^2=49/4X-1=+(或-)7/2X=9/2或-5/2
(X-1)^2=49/4X-1=7/2或x-1=-7/2x=9/2或x=-5/2
(X-1)^2=49/4X-1=7/2x=9/2