问题
填空题
方程x(x+2)=x+2的解是______.
答案
x(x+2)=x+2,
x(x+2)-(x+2)=0,
(x+2)(x-1)=0,
x+2=0或x-1=0,
x1=-2或x2=1.
故答案为:x1=-2,x2=1.
方程x(x+2)=x+2的解是______.
x(x+2)=x+2,
x(x+2)-(x+2)=0,
(x+2)(x-1)=0,
x+2=0或x-1=0,
x1=-2或x2=1.
故答案为:x1=-2,x2=1.