(√(a))²=a The square root and the square cancel to leave just 49/21■
x=1/2(-1-square root of 21) and x=1/2(square root of 21 -1)
As written, that's 4x squared = -21 and x equals the square root of -21/4. But if you meant that to be 12x, it factors out nicely to (2x + 3)(2x + 3) and x would equal -3/2
The square root of 410 equals 20.2485. 20.2485 is between the two integers, 20 and 21.
4.6 is a better approximation to the square root of 21.
To find the length of AC, use the Pythagorean theorem. AC equals the square root of (AB squared + BC squared), which is the square root of (9 squared + 12 squared), giving AC = square root of (81 + 144) = square root of 225 = 15 centimeters.
(√(a))²=a The square root and the square cancel to leave just 49/21■
21.
If you mean 84 squared then it is 84*84 = 7056 If you mean the square root of 84 then it is 2 times the square root of 21 which is an irrational number
The square root of 21 is 4.58257569495584.
x=1/2(-1-square root of 21) and x=1/2(square root of 21 -1)
As written, that's 4x squared = -21 and x equals the square root of -21/4. But if you meant that to be 12x, it factors out nicely to (2x + 3)(2x + 3) and x would equal -3/2
The square root of 410 equals 20.2485. 20.2485 is between the two integers, 20 and 21.
The square root of 21 is 4.58257569495584.
5 squared is 25, and 6 squared is 36.Because 31 lies between 25 and 36, the square root of 31 lies between 5 and 6.
5*root(21^2) = 5*21 = 105
√6 x √14 is the same as √(6x14). This equals √84, which can be simplified to 2√21.