There is no simple or general method.
One option is to convert the decimal number to a rational fraction - proper or improper.
Then sqrt(x/y) -= sqrtx)/sqrt(y) may provide a solution.
For example,
s = sqrt(0.87890625) = sqrt(87890625/100000000)
GCF(87890625, 100000000) = 78125
therefore, s = sqrt(225/256) = sqrt(225/sqrt(256) = 15/16.
This only works if x/y is a square of some rational fraction. If not, the Newton Raphson method is best.
If you want to find the square root of kkk, define f(x) = x^2 – kkk. Then finding the square root of kkk is equivalent to solving f(x) = 0.
Let f’(x) = 2x. This is the derivative of f(x) but you do not need to know that to use the N-R method.
Start with x0 as the first guess. Then let xn+1 = xn - f(xn)/f’(xn) for n = 0, 1, 2, … Provided you made a reasonable choice for the starting point, the iteration will very quickly converge to the true answer. It works even if your first guess is not so good:
Suppose you want the square root of 7.7 and you you start with x0 = 3 (a pretty poor choice since 3^2 is 9, which is not exactly 7.7).
Even so, x3 = 2.774887385, which is less than a billionth of 1% from the true value. Finally, remember that the negative value is also a square root.
The square root of 8 is an irrational number and so can only be represented by an infinitely long decimal expression. Rounded to 4 decimal places, it is 2.8284
7.3484692283495345
No, it is neither.
±3i√6 Rounded to two decimal places, the square root of +54 is equal to ±7.35. Therefore, the square root of -54, rounded to two decimal places, is equal to ±7.35 i.
7.1
3.3 IS THE square ROOT of 11 to one decimal place
Nonterminating Decimal: A decimal that continues without end.For example:The square root of 2 = 1.414213562… Therefore, the square root of 2 is a nonterminating decimal.
The square root of 6 is an irrational number; it can only be approximated as a decimal. √6 ≈ 2.449
square it
Most of them do.
Its square root an irrational number and it is about 9.3 rounded to one decimal place
The square root of 64 is 8. Rounded to two decimal places it would be 8.00
The square root of 10 is about 3.16227766.
The square root of 8 is an irrational number and so can only be represented by an infinitely long decimal expression. Rounded to 4 decimal places, it is 2.8284
Simplified, the square root of 35 is just root 35. The decimal is about 5.916079763.
2.6457513111
No, it is not.