Question

show that 5+2✓7 is an irrational number where ✓7 is given to be an irrational ?​

Answer 1

Answer:

Therefore, 5+2√7 =a/b where a and b are integers having no common factors other than 1. Since, a and b are integers, therefore, √7 is rational. This contradicts the fact that √7 is irrational.