Question

A=(1,2)
B=(x : x belongs to N & x²-9=0)
find AxB​

Answer 1

Answer:

A=(1,2)

B=x²-9=0

x²-9=0

x²=9

X=√9

x=3

B=(3)

A×B= (1,2)×(3)

A×B=

(1,3),(2,3)