Question

if A={1,2},B={x:x€ N and x2-9=0}.find A×B​

Answer 1

Hey there, here's your answer.

A = {1, 2}

B = {x:x € N and x²-9=0}

Solving the equation, we get x² = 9

x = ±3

However x € N so x = 3

A × B = {(1,3),(2,3)}

Answer 2

Refer the attachment....☺️

I hope this helps you

Have a great day......❤️