Question

why is the invention of the zero considered to be of such great importance by scientist

Answer 1

because if zero had not been discovered it would be impossible for us to move ahead from number nine

Answer 2

Because zero is the number made many confusion in its value Neither it has value nor it doesn't has value.
2.If any real number is divided by zero the solution is zero but if zero is divided by any real number it has no solution
3. Zero is neither positive nor negative
So,the invention of zero is considered to be of such great importance by scientists.