### Triangles | Chapter 6 Exercise 6.5 Question 14:

The perpendicular from A on side BC of a ∆ABC intersect BC at D such that DB = 3. Prove that 2 AB^{2} = 2 AC^{2} + BC^{2}

**Solution:** Detailed explanation of exercise 6.5 question 14 is given in the below image and YouTube video.