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# Factoring quadratics with a common factor

We can factor quadratics by first pulling out a common factor so the result looks like a(x+b)(x+c). Created by Sal Khan.

## Want to join the conversation?

• Muffin (chocolate)
• To find the width, could we also divide all the terms of the trinomial by 6? If yes, would this strategy work with all trinomials?
• Not really,like in this question 8x^2-14x+49.
But in these questions,yes they work the same way.
• khan needs to stop needing SUPER SPECIFIC ANSWERS! especially when I had it right and it marked it wrong because "WrOnG FoRmAt" yet on my actual test in school I wont be wrong... man give me an overide button like Quizlet or something..
• What are you supposed to do when there's no third number?
• There always should be a third number, but in theory you can put 0 there if there is no third number.
• In class, we are doing this but with a 4-term polynomial. We make a factor ladder for both binomials. This is the same thing as that but instead of two binomials we just have a trinomial right?
• How do you find they greatest common factor as mentioned in ?
• visualization is confusing; can't we do without it??
• Visualization may be confusing for you, but others might learn better through visualization. It depends on how you learn best.
• Guys, how do I change my profile picture
(1 vote)