Question: 1. For each integer n, list all the positive divisors of n = -30. Prove each existential statement given below. 2. There are integers c

1. For each integer n, list all the positive divisors of n = -30.

Prove each existential statement given below.

2. There are integers c and d such that 7c + 5d = 1.

3. There exists a negative integer that is equal to its cube.

4. Show that there is an integer n such that n2-1 is prime.

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