MathDB

7

Part of 2010 Hanoi Open Mathematics Competitions

Problems(1)

integer a such 2x^2-30x+a=0 has prime roots (HOMC 2010 J Q7)

Source:

7/25/2019
Determine all positive integer aa such that the equation 2x2āˆ’30x+a=02x^2 - 30x + a = 0 has two prime roots, i.e. both roots are prime numbers.
number theoryprimesquadraticsroots