299,985 views
15 votes
15 votes
I'm learning imaginary numbers and I still need help understanding everything. like
√( - 100)

User Mohit Tomar
by
3.0k points

1 Answer

7 votes
7 votes

We have to remember that in imaginary numbers or complex numbers we have that:


i^2=-1\Rightarrow i=\sqrt[]{-1}

Then, if we have:


\sqrt[]{-100}=\sqrt[]{100\cdot i^2}=i\cdot\sqrt[]{100}=i\cdot10=10i

Then, the answer to that square root is 10i.

User Muizz Mahdy
by
2.3k points