Question

If x is a prime number, then for how many values of x,x²+7 is also a prime number

Answer 1

Answer:

If x is a prime number,then we take X=2.And it satisfies us when we put it in x^2+7=(2)^2+7=4+7=11.

And we know that 11 is a prime number.

Step-by-step explanation:

Here I use error and trial method to figure out the result...