A Square number starting with 9 and ending with 9?

Answer 1

The square of a number starting with 9 and ending with 9 must be in the form of 9X9 = 81. In this case, the square root of 81 is 9, which meets the criteria of starting and ending with 9. Therefore, the square number you are looking for is 81.

Answer 2

Oh, dude, a square number starting with 9 and ending with 9? That's a tough one! Well, technically, 99 is a square number because 9 squared is 81 and 10 squared is 100, so 99 falls right in between. But hey, who's really keeping track of all these square numbers anyway, am I right?

Answer 3

Oh, what a delightful question! A square number starting with 9 and ending with 9 is 9409. Just imagine all the happy little squares dancing around, creating such a lovely pattern. Keep exploring the world of numbers, my friend, and let your curiosity guide you to new discoveries!

Answer 4

x = 9*102y+z+9
a = x1/2
a is an integer
x = 9*(102y+z/9+1)
a = 3*(102y+z/9+1)1/2

let c = 10y
f = (3c+3)2
f = 9c2+18c+9
f ∈ a, y > 1

let g(y) = f

g(-n), g(1-n), ..., g(-4), g(-3), g(-2), g(2), g(3), g(4), ..., g(n-1), g(n) =
..., 9.0018009, 9.018009, 9.1809, 91809, 9018009, 900180009, ...

f for any integer y is a square number, when y ≠ ±1

Answer 5

Well, honey, a square number starting with 9 and ending with 9 is 9409. It's as simple as that. Just a little math magic for you.