Question

x² + 2bx-b² = a^2-b(b-2x)​

Answer 1

Answer:

Question 4 Is the following situation possible? If so, determine their present ages. The sum of the ages of two friends is 20 years. Four years ago, the product of their ages in years was 48.in case of hcp structure how was appears in first second and third layer arranged?there are 12 identical balld of different colours in a bag. if 6 more black balls are added then the probability of drawings black balls increase by 1/12. find the original number of black balls