Criss Cross Factoring

Remember before factoring a trinomial you must determine if there is a greatest common factor or not and if there is factor that out and then start factoring with criss cross.


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[yuyiheng]

I was struggling to find this method that I'd learnt in school years ago. Thanks for making it so simple and clear to understand!

[lcombs]

This tutorial is GENIUS! I have always struggled with math, and this method made factoring enjoyable. I have NEVER used the words enjoyable and math in the same sentence!

[MissCandySoFly]

I like this method factoring has really been a pain in the ass

[alaynawright]

When he does one of the problems from your math homework 😂

[Rose-nrck]

11 years ago when this was posted.. i was 1 year old.. playing, not caring avout my future.. and you posted this.. this is really helpful for now that I'm in 8th grade😁 thank you.. although you stopped posting.. just remember that you helped a lot of kids.. and also in the future.. kids will watch your video 😊

[emperor]

It’s 2021, I’m watching this as I have a test this week, and you taught me better than my teacher ever could

[SuperTalkcam]

I was struggling with this in Kumon (I'm level I 50a) and I found your video and pretty much you have explained this so clearly. Thank you and thank you I say again. :)

[babysealclub]

finally a video that makes sense.. thank you.

[solofoe]

no offense to my math teacher but English is a second language and she speaks with a thick accent. This method is so straight forward, thank you!

[byron]

I like that he shows getting the problem wrong in the last equation. Teachers never show you that. So, when you get to a wrong answer, you don't know what to do next, or why it came out wrong.

[MO-vsdg]

Omg, this is the how! I've been sitting here for days trying to figure this ish out, thanks mang!

[izaakh-a]

This tutorial is really useful. BUT, there is an absence of clarification: as if one were to use a different pair of numbers that multiply together to make 20 this method wouldn't work as not all pairs will make 𝓧. e.g 10 and 2, one could neither subtract either of the two numbers to make [1]𝓧. It is crucial to remember that the two numbers need to add or subtract in a way to equal the second term (b).

[regopotswemothiba]

Thank You Sir. You have helped alot. You have a good heart to take your precious time and do such things for us.

[AyagqibelaMbusi]

Thank you so much, I’ve been trying to solve a question like this for a whole 30 minutes. This really helped❤️

[gabriella-emmaandoscar]

i cannot you how many videos i have watched to learn this. ..FINALLY yours makes sense! ! Thank you! !!

[sincerley_taleensedits]

Thank u so much u explain everything better than my teacher

[aminahxprice]

thanks sooo much. i had 4 people trying to explain this to me but your video has helped me out A LOT!!

[tinyeung]

your method is way easier to use and memorise than the standard ones from the books, thx a lot

[Chionokun]

Dude, thank you. Factoring has been a pain in the butt until now.

[Duwinmath]

Step 1: Pull out the GCF
4(x^2-12x+27)

Step 2: Criss Cross
Using x and x on one end and 9 and 3 on the other side.
It should factor to be 4(x-9)(x-3)

Thanks for watching and sometimes you will have to change the numbers that you picked all together and play around with it a little bit to get the answer. Criss Cross is just a really good way to keep your guess and check very organized.