No but 81 is a square number
No but 81 is a square number
1,4,9,16,25,36,49,64
Yes
No, because an integer is a whole number and it's opposite (negative or positive). The square root of 80 is not a whole number.
No, 80 is a not perfect square.
No but 81 is a square number
No.
No but 81 is a square number
No, there aren't any square numbers between 70 and 80. From 70 to 80, no number has a perfect square root, so no square number exists between 70 to 80.
No
The square root of -6400 is not a real number because the square root of a negative number is not defined in the real number system.
64
1,4,9,16,25,36,49,64
Yes
9
It is 64.