The correct option is (D) .
Which is a non-real complex number?
- Nonreal complex numbers include pure imaginary numbers and those with a and b values of zero, such as 7 + 2i.
- A non-real or imaginary number is the name given to the square root of a negative number. For instance, the numbers 1, 28, and 5 are all imaginary numbers.
- Complex numbers cannot be plotted on the actual number line because they contain imaginary numbers.
- On the complex number plane, which has a y axis (for the imaginary number) and an x axis (for the real number), they can, however, be measured starting from zero (for the imaginary number).
In all these options , they are presenting real complex number .Real numbers can be positive or negative, and include the number zero. that is why we select option D .
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