১/২{(a+b)<span style="color: rgb(0, 0, 0); font-family: 'Lucida Sans Unicode', sans-serif; font-size: 14px; line-height: 19.6000003814697px;">²</span>+(a-b)<span style="color: rgb(0, 0, 0); font-family: 'Lucida Sans Unicode', sans-serif; font-size: 14px; line-height: 19.6000003814697px;">²</span>} কত ? <div><br></div>

²+(a-b)²},কত,?

"> ²+(a-b)²} কত ?

"> ১/২{(a+b)<span style="color: rgb(0, 0, 0); font-family: 'Lucida Sans Unicode', sans-serif; font-size: 14px; line-height: 19.6000003814697px;">²</span>+(a-b)<span style="color: rgb(0, 0, 0); font-family: 'Lucida Sans Unicode', sans-serif; font-size: 14px; line-height: 19.6000003814697px;">²</span>} কত ? <div><br></div>

1. ²+(a-b)²}-কত-?

">১/২{(a+b)²+(a-b)²} কত ?

[14 th BCS (Education) : 1992]

1. a²+b²

2. a²-b²

3. (a+b)²/2 - (a-b)²/2

4. (a+b)²+(a-b)²

Answer

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