Hurry i will fail math if i don't get this no joke

two numbers have a sum of 2 and a product of -8. the quadratic equation -n^2 + 2n + 8= 0 can be used to
determine the two numbers.

a) graph the related function f(n)= -n^8 +2n+8 and determine its x-intercepts

b) what are the two numbers?

for a you can just tell me the x intercepts