2014 · Q70
Which one among the following is indicated by the figure given above (a large square of side a+b divided to show the identity)?
general-mental-abilityquantitative-aptitude
- Aa + ab + ab^2 + ... = a/(1-b) for b < 1
- Ba > b implies a^3 > b^3
- C(a+b)^2 = a^2 + 2ab + b^2
- Da > b implies -a < -b
Explanation
The figure geometrically proves the identity (a+b)^2 = a^2 + 2ab + b^2.