(x+12)X(x十12)=xXx十360_数学解答

(x+12)X(x十12)=xXx十360

人气：299 ℃　时间：2020-04-20 16:22:30

解答

(x+12)x(x+12)=xx+360
x(x+12)+12x+12x12=xx+360
xx+12x+12x+144=xx+360
24x+144=360
24x=216
x=9