NCERT Exercise 4.3 - Q4 - Quadratic Equations
Question: 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.
Answer: No, the situation is not possible because the discriminant is negative.
Full step-by-step NCERT solution with diagrams on Something by Zero.