find the root of equation x²-4=0
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Answer:
Explanation:
For this, you need a concept of imaginary numbers
x2+4=0
⇒x2+4−
4=0−4
(Subtracting
4
from both sides)
⇒
x
2
=
−
4
⇒
x
=
√
−
4
⇒
x
=
√
−
1
×
4
⇒x=±2√−1
(The value of √-is i)
⇒x=±2i
Hope this helps :)
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