Answer:
i don't understand your question can you make your question more simpler please
Explanation:
The consecutive numbers are either 2 and 3, or 7 and 8..
x(x+1) = x^2 + x
x^2 + x = 10x-14
quadratic form of x^2 + x = 10x-14:
x^2 - 9x + 14 = 0
(x-2)(x-7) = 0
x = 2, 7
so 2 and 3, or 7 and 8 are the answers
there are more than 200 countries in the world
Yes it developed but am not really sure what you mean
