`(sqrt(2)+1/(sqrt(2)))^(2)` के बराबर है?

Options

A. `2 1/2`
B. `3 1/2`
C. `4 1/2`
D. `5 1/2`

Answer

C

Explanation

According to the question
`implies(sqrt(2)+1/(sqrt(2)))^(2) [ :' (a+b)^(2)=a^(2)+b^(2)+2ab]`
`implies(sqrt(2))^(2)+(1/(sqrt(2)))^(2)+2xxsqrt(2)xx1/(sqrt(2))`
`implies 2+1/2+2implies(4+1+4)/2`
`implies 9/2=4 1/2`