(x+12)X(x十12)=xXx十360
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(x+12)X(x十12)=xXx十360(x+12)X(x十12)=xXx十360(x+12)X(x十12)=xXx十360(x+12)x(x+12)=xx+360x(x+12)+12x+12x12
(x+12)X(x十12)=xXx十360
(x+12)X(x十12)=xXx十360
(x+12)X(x十12)=xXx十360
(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
(x+12)X(x十12)=xXx十360
X十X=XxX,X=口
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