The additional operation which needed to make the expression equivalent to given expression is . Thus the option 3 is the correct option.
Equivalent expression are the expression whose result is equal to the original expression, but the way of representation is different.
Given information-
The equation given in the problem is,
Let the equation is equation number 1.
This expression is to convert in the expression, which is,
Let the above equation is equation number 2.
Let the additional operation which needed to make the expression equivalent to given expression is .
As the addition of and equation 1 is equal to the equation 2. Therefore,
Solve the equation as,
Hence, the additional operation which needed to make the expression equivalent to given expression is . Thus the option 3 is the correct option.
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