Question

if A={1,2},B={x:x belongs to N and x^2-9=0}.Find A×B.

Answer 1

A×B=4............,,,

Answer 2

Answer:

A × B = { (1,3) , (2,3)}

Step-by-step explanation:

A = {1,2},

B = {x:x€N and x² - 9 =0 }

= { 3 }

Now ,

A×B= { 1,2 } × { 3 }

= { (1,3) , (2,3)}

Therefore.,

A × B = { (1,3) , (2,3)}

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