What is the square root of -25?
- 5i
- -5
- -2.5
- None of these
Explanation
The square root of -25 is 5i, where i is the imaginary unit (√-1).
Since the square root of a negative number is not a real number, we use imaginary numbers to express it.
So, √(-25) = 5i.
Related MCQs
ایسی شخصیت جس کے چاروں اطراف برابر ہوں وہ کیا کہلاتی ہیں؟
- Rectangle
- Square
- Circle
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
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