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| 1. |
Prove irrational √n+1+√n-1 |
| Answer» +1&-1 willcut out each other.Then, √n+√n will become2√n .√n is irratinal no.& if any irrational no. Multiplies with any rational no. The product is irrational. So √n+1+√n-1 is irrational. | |