The value root of 40 of lies between which two consecutive integers

When you square + 6 or - 6 you get 36. That's less than 40.

When you square + 7 or - 7, you get 49. That's more than 40.

So one of the square roots of 40 is between + 6 and + 7, and

the other square root of 40 is between - 7 and - 6.