Odd numbers are

2x- 1

2x+ 1

2x+3

(2x- 1)^2+(2x+ 1)^2+(2x+3)^2

=37 1

simplify

x^2+x-30=0

(x-5)(x+6)=0

x=5

or

x=-6

Three odd numbers are

nine

1 1,

13

or

- 13,

- 1 1,

-9

p，s:

If negative numbers are also odd and even.