Mathematics: Solve the quadratic equation. x^2 = -4 don t know where to start, would appreciate if someone would be able to explain the answer in detail!

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Solve the quadratic equation. x^2 = -4 don t

katelozo117

18.01.2022

x = ± 2i

Step-by-step explanation:

The equation has no real roots, gut has complex roots

Given

x² = - 4 ( take the square root of both sides )

x = ± $\sqrt{-4}$

= ± $\sqrt{4(-1)}$

[ Note that $\sqrt{-1}$ = i ]

= ± $\sqrt{4}$ × $\sqrt{-1}$ = ± 2i

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