4(x+1)²=252(x+1)=±52x+2=±52x=-2±5x=-1±5/2 x = 3/2或-7/2
4(x+1)²=25(x+1)²=25/4x+1= ±5/2x = -1±5/2所以 x = 3/2 或 x = -7/2
4（x+1）^2=25(x+1)^2=25/4x+1=5/2或-5/2所以 x = 3/2或-7/2
(x+1)^2=(5/2)^2x+1=5/2x=3/2
