7, because multiplying the same sqaure root cancels them.
Since it is the square root of a negative number, it is actually imaginary, neither rational nor irrational. It is equal to 9i, or 9 times whatever the square root of negative one is.square root of -81 = square root of 81 times i = 9i
No. 81 is a rational number. An irrational number is a number with an endless amount of digits like pi or the square root of 2.
49 11,4,9,25,100
If that's 81 - 16k2, it factors neatly as the difference of squares into (9 - 4k)(9 + 4k)If that's 81 + 16k2, it factors to (4k -9i)(4k + 9i) where i is the square root of negative one.
The square root of 81 is 9, and 9 cubed is 729.
To find the square root of a number you multiply that number by it self twice.(example) the square root of 9 ? the square root of nine is 81 as 9X9=81. square root of 4 ? th square root of is 16 as 4X4=16.
there is no square root of 11.
root of 676 = 26
12.
it is 6.7082
blueberries
1.1414213562...
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3
6.403124237...
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