Algebra 2 - Simplifying square roots with imaginary numbers, x^2 + 1 = 0

x^2 + 1 = 0

[goodstudent]

x^2 +1 = 0 has two roots, x = i and x = -i

[teacherhomieg]

Hey Brian you may want to show your students the several part videos by Welch Labs on imaginary numbers. They’re excellent and fully explain the history plus the geometric implications of imaginary numbers.

[cherishkansara]

Thankx for explaining love from India🇮🇳🇮🇳

[amine]

You always forgot to say 'by convention i²=-1' it's very important... Then we can
say the equation x²+1=0 have like solutions x=±i so i it's an imaging number.

[jonathanalpizar]

Muy buen vídeo y buena la explicación saludos desde la CDMX en México.

[lolpke]

What is the second root of x^2=0
x1=0
x2=???

[DalandanReal]

i still dont get it why imaginary number still exist that doesnt exist in reality ?

[ManiAdhikari-dhcc]

X^2+1=0.here, X^2=-1.on squaring both side, we get x^4=(-1^2), which gives X^4=1, so X=+-1.Can anyone tell me why this is wrong plzzzz

[ken]

There is no thing as a negative number, only a positive number in a negative direction.

[itsmemrd]

Why this is in precal and rational inequality

[ken]

You still did not solve for x.
What is the numerical value for x that would satisfy the original statement, .
Truth is that there isn’t one as the statement x squared plus 1 = 0 is false.
Cheers

[MB]

I saw an ad that was animated by goanimate, disgusting