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No. Square numbers are from numbers being squared like 2 squared is 4. Squaring a number is multiplying it by itself so 3x3=9, 4x4=16, 5x5=25, and so on. The closest square numbers to 40 are 36 (6x6) and 49 (7x7) there are no whole numbers to square in between 6 and 7 so 40 cannot be a square number
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Is 38 a square number?
No 38 is not a square number.
When you square a number the number is positive?
When you square a real number the answer is positive,
What number can be increased or decreased by 10 and you will still have a square number?
"Still" implies that the original number is a square number. In that case, the answer is as follows: There is no number such that it is a perfect sqiuare and that the number increased (or decreased) by 10 is also a perfect square. And if you do not limit it to perfect square then every non-negative number is a square with the number that is 10 more also being a square.
Is the square of -8 a rational number?
The square of a negative number is always positive. The square of -8 = 64, a rational number
What number is an even square number?
Any even number you square will give you a even square number =)
