Factoring a Cubic Polynomial (Synthetic Division 01)
We use synthetic division to factor a cubic polynomial. For more practice using synthetic division please watch this video:
Synthetic Division 2:
• Factoring a Cubic Poly...
We use synthetic division to factor a cubic polynomial. For more practice using synthetic division please watch this video:
Synthetic Division 2:
• Factoring a Cubic Poly...
Пікірлер: 29
I did a foundation year for Electronic Engineering specifically designed to set you up for the degree. Then I find there's a shit ton of GCSE/A Level maths that wasn't taught to me is needed, great.
@MewTCG1
3 жыл бұрын
Shit pal, what are you up to now?
What if you're not give a root to begin with? Plus could you please tell how do you create these video lesson? Thanks a bunch!
Thanks, Good video to the point, short and meaningful
good video. I learned something important from it
You saved me. Thank you
Baba Dankie Baba🙌🏾🔥❤️
Nice explanation 🔥🔥
It's helpful ..thanx for this video
perfect method for solving
Nice explanation
Thank you so much
Thank you sir but will I alway roots from x?
NICE XPLANATION BRO
I have a question that I want you to tackle it for me.
Thnx
how do you know to use 1, what if we had to use another number to factor?
@vedanthvbaliga4415
6 жыл бұрын
just find the roots by trial and error method and then use this method
@adrianforbes7863
6 жыл бұрын
And the way you do that is by setting x to a number, call it a, in the original polynomial and if the result is 0 then a is a root, and (x-a) is a factor. e.g. for the polynomial x^3 +2x^2 - 3x, if you substitute 1 into x, you get y = 0, so 1 is a root and (x-1) is a factor. I was wondering though, Is there another method that works every time, other than trial and error?
@GreaterDeity
3 жыл бұрын
@@adrianforbes7863 I hope so because that sounds incredibly inefficient.
nice
roots are based on factors of the constant 15? T_T
if we plug back x=5 or x=-3, it doesnt satisfy the original equation. HOW?
@rootmath
5 жыл бұрын
I'm not sure what you mean. If you plug those numbers into the factored polynomial or the original polynomial you get 0.
@zallankhan3471
5 жыл бұрын
rootmath my bad! I got it all wrong. Thanks anyway!
thx for video
I don't get why u would do long division? This is so much simpler and faster.
What if you are not given 1 is a root... my homework does not give that.
@alexandria.n
3 жыл бұрын
you have to plug in values until your equations equals 0. Try 1; -1; 2; -2; 3; -3 until you get 0 and whatever value gave you 0 is your first factor.