Examveda
Examveda

If a - b = 3 and a2 + b2 = 29, find the value of ab.

A. 10

B. 12

C. 15

D. 18

E. None of these

Answer: Option A

Solution(By Examveda Team)

2ab = (a2 + b2) - (a - b)2
2ab = 29 - 9
2ab = 20
ab = 10

This Question Belongs to Arithmetic Ability >> Simplification

Join The Discussion

Comments ( 1 )

  1. Kaushal Singh
    Kaushal Singh :
    1 year ago

    Good Explanation

Related Questions on Simplification