Sqrt(n*7) = sqrt(n)*sqrt(7) = 2.646*sqrt(n)
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Do the multiplication, then take the square root. After the multiplication, you get 28x4y2. The square root of 28 is 2 times the root of 7, the square root of x4 is x2, and the root of y2 is y. So, the final result is 2 times square root of 7, times x2y.
The square root of 49 is 7. 7 times 5 is 35.
The square root of 49 is 7.7 times 7 is 49, so the square root of 49 is 7. 7
7 times the square root of 7
9.899494936611665It is: 7 times square root of 2± 9.899495