Skip to content / Đến nội dung
ThichHocToan.com

MathNet 2017-part-03 — 176 problems (EN–VI) Question 30

Math Olympiad Vault · MathNet 2017-part-03 — 176 problems (EN–VI)

Question 30

a. Examine if there is a real number $x$, such that both $x + \sqrt{3}$ and $x^2 + \sqrt{3}$ are rational numbers.

b. Examine if there is a real number $y$, such that both $y + \sqrt{3}$ and $y^3 + \sqrt{3}$ are rational numbers.