Question: Exercise 3 Using a direct proof, show that: 1 Vx x2 + 3x is an even number. 2. n positive prime number such that n+1,

Exercise 3 Using a direct proof, show that: 1 Vx x2 + 3x is an even number. 2. n positive prime number such that n+1, n +2, n+3, n+4 are not prime
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