Question

if n×n+2n-8 is a prime number where n€N then n is

Answer 1

Answer:

n = 2

Step-by-step explanation:

n² + 2n - 8 is the given quadratic,

Hence solving,

n² + 4n - 2n - 8 = n (n+4) - 2(n+4) = (n+4) (n-2)

n = -4,2

∵ n∈N or natural numbers, n = -4 is not a natural number hence not a valid value for n.

∴ n = 2

Answer 2

Answer:

Step-by-step explanation: