Can you guess whether it's a cubic or a quadratic equation??? | 90% make mistake😱

[@thomaslangbein297]

Do you really think that you have to explain everything like for a 5th-grader when you presuppose the understanding of the concept of complex numbers? And the Fundamental Theorem of Algebra??

[@Gerkhin]

x=2

What the heck is going on after x^3=8? :)

[@cyruschang1904]

x^3 = 8
x^3 - 8 = 0
(x - 2)(x^2 + 2x + 4) = 0
x = 2, 1 +/- i✓3

[@make_math_easy]

✔️👍

[@cyruschang1904]

(2/x)(2/x) = x/2
4/(x^2) = x/2
x^3 = 8
x^3 - 8 = 0
(x - 2)(x^2 + 2x + 4) = 0
x = 2, 1 +/- i✓3

[@Hyperion1722]

it is cubic without batting an eyelash or completing the video..

[@make_math_easy]

👍

[@Hyperion1722]

@@make_math_easy But if you say find X, I have to grab my pen and paper to solve the problem... lol...

[@make_math_easy]

It's easy to find x...you can also do it in your head🙂

[@Hyperion1722]

@@make_math_easy No for ordinary person. That quadratic equation has three constants that need to be reduced to a meaningful number.