Example 1: Simplifying polynomials | Algebra I | Khan Academy

Simplify 3x^2 - 8x + 7 + 2x^3 - x^2 + 8x - 3

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Algebra I on Khan Academy: Algebra is the language through which we describe patterns. Think of it as a shorthand, of sorts. As opposed to having to do something over and over again, algebra gives you a simple way to express that repetitive process. It's also seen as a "gatekeeper" subject. Once you achieve an understanding of algebra, the higher-level math subjects become accessible to you. Without it, it's impossible to move forward. It's used by people with lots of different jobs, like carpentry, engineering, and fashion design. In these tutorials, we'll cover a lot of ground. Some of the topics include linear equations, linear inequalities, linear functions, systems of equations, factoring expressions, quadratic expressions, exponents, functions, and ratios.

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[MerakiLovesU]

When an online teacher is better than your real teacher.

[jeffreyconcepcion]

I feel dumb now cause now it look so easy

[Frenchieslife]

I’m teaching myself algebra to study for an electrician test. I find myself watching these videos over thousands of others because you explain everything so good. I have adhd and have a hard time paying attention to things, but I think the combination of they way you break everything down with the different colors really keeps my attention and I’m able to grasp all these math concepts. Plus I enjoy your voice. It’s very soothing. Lol thanks man!

[Lhoodied]

This makes things alot more easier
My teacher teaches very fast and confusing

[marilynsumatra]

my math reg teacher made it confusing af

this is better than my math reg teaches us

[hobbcandy]

Resorting to YouTube to study for my math test cause polynomial a confuse me

[zoed.]

Thank you this really helped me! Definitely signing up khanacademy. I used to have an account there but then things happened and I somehow stopped doing lessons. I'll re-start everything now because I need to improve my Algebra 1. Thank you so much!

[panicdragons]

Thank you this helped so much I was absent from school that day so the teacher just gave me notes I kept on reading over and over and didn't get.

[cornbreadandcollardgreenz]

DUDE THANK YOU SO MUCH YOU JUST SAVED ME 30 MINUTES WATCHING AN ONLINE LESSON BY MY TEACHER

[maxcryer]

Thanks! I took a sick day right at the beginning of a new unit and was given homework that I didn’t understand. Very simple and helpful

[theguywhohasnosenseofhumou]

thanks for helping me with my kumon homework

[boringbilal]

Nice example! Where is example 2? It says on the title and thumbnail that this is example 1.

[spazmanred]

i was just adding anything that had an X on it together and adding the powers.

[sparklyanna]

what’d you do with the extra plus at 2:51?

[paramvirsingh]

can we consider an expression a polynomial if it doesn't has a constant?

[Crystal-]

What is the proper order for the answer? How do you know what variable goes first?

[Bluewater]

Dude unbelievably well taught thanks...

[Luichi]

Can I rearrange to any order as long as the like terms are next to each other?

[denverjohnlangawancorpuz]

Thanks I can finally Understand the problem 😌

[diyayaaa]

Whose here after 10 years so it's only me here all alone