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karatechopper Group TitleBest ResponseYou've already chosen the best response.0
what to simplify?
 2 years ago

careless850 Group TitleBest ResponseYou've already chosen the best response.0
\[\frac {x^{2}12x+20}{x10}\]
 2 years ago

phi Group TitleBest ResponseYou've already chosen the best response.0
you have to factor the top.
 2 years ago

careless850 Group TitleBest ResponseYou've already chosen the best response.0
So, it'd be, x  3x + 5?
 2 years ago

phi Group TitleBest ResponseYou've already chosen the best response.0
list the factors of the 3rd number 20 1,20 2,10 4,5 do any add up to 12 if so, that is the pair to use. the sign of the 2nd number (12) tells you to make the factors negative I would use (x2)(x10)
 2 years ago

careless850 Group TitleBest ResponseYou've already chosen the best response.0
Alright.. I didn't know about that part.
 2 years ago

phi Group TitleBest ResponseYou've already chosen the best response.0
once you have it factored up top, we can cancel the (x10) from top and bottom
 2 years ago

careless850 Group TitleBest ResponseYou've already chosen the best response.0
but wait..
 2 years ago

careless850 Group TitleBest ResponseYou've already chosen the best response.0
What if I don't know the factors with numbers?
 2 years ago

phi Group TitleBest ResponseYou've already chosen the best response.0
I think that means you have to practice.... Here is a video, when you have time http://www.khanacademy.org/math/algebra/polynomials/v/factoringquadraticexpressions
 2 years ago

careless850 Group TitleBest ResponseYou've already chosen the best response.0
but I'm Simplifying Algebraic Ratios
 2 years ago

phi Group TitleBest ResponseYou've already chosen the best response.0
That means they think you know algebra, including factoring quadratics
 2 years ago

careless850 Group TitleBest ResponseYou've already chosen the best response.0
Would the answer be x2?
 2 years ago

phi Group TitleBest ResponseYou've already chosen the best response.0
yes. you can test the answer pick a simple number like x=0. If your answer is correct (x2) with x=0 is 02= 2 replace x=0 into the original problem: and you get 20/10= 2 It matches!
 2 years ago

careless850 Group TitleBest ResponseYou've already chosen the best response.0
I see. And I lied about the factoring thing, I can factor numbers that are even or divisible by 5
 2 years ago

phi Group TitleBest ResponseYou've already chosen the best response.0
If the video helps, notice that Khan has LOTS of videos on pretty much any topic you might have a question on.
 2 years ago
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