Question

The roots of the following quadratic
equation are :
x^2 + 4 = 0
​

Answer 1

Answer:

+-√-4

Step-by-step explanation:

x^2+4=0

x^2=-4

X=+-√-4

Answer 2

Explanation:

For this, you need a concept of imaginary numbers

x

2

+

4

=

0

⇒

x

2

+

4

−

4

=

0

−

4

(Subtracting

4

from both sides)

⇒

x

2

=

−

4

⇒

x

=

√

−

4

⇒

x

=

√

−

1

×

4

⇒

x

=

±

2

√

−

1

(The value of

√

−

1

is

i

)

⇒

x

=

±

2

i

Hope this helps :)