Maths-
General
Easy
Question
Which of the following is equivalent to the expression 
?
I) 
II) 
- I only
- II only
- I and II
- Neither I nor II
The correct answer is: I and II
HINT: Expand 
and Ⅱ and verify with the given expression.
Complete step by step Solution
Given expression is .
.
Ⅱ.
Using these algebraic identities, expand and Ⅱ.
On expanding ,
We get, 
which is the same as the required expression.
On expanding Ⅱ,
We get, 
which is the same as the required expression.
Here both and Ⅱ are equivalent to the given expression.
So option C is the correct answer.
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