Answer:
Supose you have the number 1.2345
Here you have 4 numbers afther the decimal point, if you want to write this as a fraction, you can multiply it and divide it by 10^n
where n is the number of decimals afther the decimal point, in this 4 = 30
10^4 = 10*10*10*10 = 10,000
Then we have:
1.2345 = (10,000/10,000)*1.2345 = (12,345/10,000)
Now you have the initial number as a fraction.
You can use this in the next step.
if you have ![\sqrt[n]{1.23}](https://tex.z-dn.net/?f=%5Csqrt%5Bn%5D%7B1.23%7D)
where if n= 2 you have a square root and if n = 3 you have a cubic root.
You can convert 1.23 by using the time we view befor, we divide and multiply by 10^2 (because we have two decimals after the decimal point)
1.23 = (100/100)*1.23 = 123/100
and now you have:
![\sqrt[n]{1.23} = \frac{\sqrt[n]{123} }{\sqrt[n]{100} }](https://tex.z-dn.net/?f=%5Csqrt%5Bn%5D%7B1.23%7D%20%3D%20%5Cfrac%7B%5Csqrt%5Bn%5D%7B123%7D%20%7D%7B%5Csqrt%5Bn%5D%7B100%7D%20%7D)
And now you calculate the roots as ussual.