Question

X^2=-9 число корней

Answer 1

У уравнения нет т.к. число в квадратной степени ( х^2 ) не может равняться отрицательному числу

Answer 2

0, тому що будь яке число в квадраті не видасть від'ємне число

Answer 3

The equation $x^2 = -9$ has no real roots. The reason for this is that in real numbers, the square of any real number cannot be negative. This is because when you square a real number, the result is always non-negative (positive or zero).

However, in the complex number system, which includes real numbers as a subset, there are two complex roots to this equation. The complex numbers are defined by including the imaginary unit $i$, where $i^2 = -1$. The two complex roots of the equation are:

1. $x = 3i$ (or $x = 0 + 3i$)
2. $x = -3i$ (or $x = 0 - 3i$)

So, while there are no real roots for the equation $x^2 = -9$, there are two complex roots in the form of complex numbers involving the imaginary unit $i$.