Question

9. What numbers are represented by A and B in the following equation ?
AB=BA
(i)A= (ii)B=​

Answer 1

Answer:

Step-by-step explanation:

We have,  

A  

2

−B  

2

=(A−B)(A+B)

A  

2

−B  

2

=(A−B)A+(A−B)B

A  

2

−B  

2

=A  

2

−BA+AB−B  

2

 

O=A  

2

−BA+AB−B  

2

−A  

2

+B  

2

 

O=−BA+AB

AB=BA

So A and C are correct answers