(1)x÷x=x x= (2)x2=2x x= (3(1)x÷x=x x=(2)x2=2x x=(3)x=x-x x=

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(1)x÷x=x x= (2)x2=2x x= (3(1)x÷x=x x=(2)x2=2x x=(3)x=x-x x=

(1)x÷x=x x= (2)x2=2x x= (3(1)x÷x=x x=(2)x2=2x x=(3)x=x-x x=
(1)x÷x=x x= (2)x2=2x x= (3
(1)x÷x=x x=
(2)x2=2x x=
(3)x=x-x x=

(1)x÷x=x x= (2)x2=2x x= (3(1)x÷x=x x=(2)x2=2x x=(3)x=x-x x=
1÷1=1
2的平方=2x2
0=0-0

(1): X=1
(2): X=任意数
(3): X=0