What are the solutions to the equation r^2=-4 ?

The solutions to the equation r^2=-4 are r=2i,r=-2i

Find the zeros of r^2=-4

The zeros of r^2=-4 are r=2i,r=-2i

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r^{2} = - 4

r = 2 i, r = - 2 i

Solution steps

r^{2} = - 4

For

x^{2} = f (a)

the solutions are

x = f (a), - f (a)

r = - 4, r = - - 4

- 4 = 2 i

- - 4 = - 2 i

r = 2 i, r = - 2 i

25 x^{2} + 40 x - 9 = 0

x^{2} - 36 = 12 x

4 + 2 (5 x + 2 x^{2}) = 11

x^{2} - 2 x - 3 = 0

2 x^{2} + 3 x - 2 = 0

What are the solutions to the equation r^2=-4 ?
The solutions to the equation r^2=-4 are r=2i,r=-2i
Find the zeros of r^2=-4
The zeros of r^2=-4 are r=2i,r=-2i