Given:
The expression is:
![\sqrt{1.69}-\sqrt[3]{0.001}](https://tex.z-dn.net/?f=%5Csqrt%7B1.69%7D-%5Csqrt%5B3%5D%7B0.001%7D)
To find:
The value of the given expression.
Solution:
We have,
![\sqrt{1.69}-\sqrt[3]{0.001}](https://tex.z-dn.net/?f=%5Csqrt%7B1.69%7D-%5Csqrt%5B3%5D%7B0.001%7D)
On simplification, we get
![\sqrt{1.69}-\sqrt[3]{0.001}=1.3-0.1](https://tex.z-dn.net/?f=%5Csqrt%7B1.69%7D-%5Csqrt%5B3%5D%7B0.001%7D%3D1.3-0.1)
![\sqrt{1.69}-\sqrt[3]{0.001}=1.2](https://tex.z-dn.net/?f=%5Csqrt%7B1.69%7D-%5Csqrt%5B3%5D%7B0.001%7D%3D1.2)
Therefore, the value of the given expression
is 1.2.
Option 2: 18-5i is the right answer
Step-by-step explanation:
Given

When there is a negative number in radical, a new complex number iota denoted by i is introduced which is equal to 
So we will solve the given expression

Hence,
Option 2: 18-5i is the right answer
Keywords: Iota, complex numbers
Learn more about complex numbers at:
#LearnwithBrainly
- Anything times(x) 1 is ONE
- Anything times 2 always has an even number at the end
On and On
Here's a picture I got from online.