Question

Solve this statement {x/2x+6=0,xEz}​

Answer 1

A={xϵz:2

(x+2)(x 2 −5x+6) =1}

2 (x+2)(x 2 −5x+6) =20

⇒x=−2,2,3

A={−2,2,3}

B={xϵZ:−3<2x−1<9}

B={0,1,2,3,4}

A × B has is 15 elements so number of subsets of A × B is 2

15.