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anonymous
 4 years ago
Factor the trinomial by grouping.
4x^2 + 21x + 27
anonymous
 4 years ago
Factor the trinomial by grouping. 4x^2 + 21x + 27

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anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0i dont see how ya got that

Hero
 4 years ago
Best ResponseYou've already chosen the best response.1Just a sec, I will get the steps

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0ok cool. i've tried at least 5 different variations of (4x+_)(x+_) and so on. can't figure anything out

Hero
 4 years ago
Best ResponseYou've already chosen the best response.1Well, you only need to find ONE, and there is a systematic way to find it WITHOUT guessing

Hero
 4 years ago
Best ResponseYou've already chosen the best response.14x^2+21x+27 4x^2+12x + 9x + 27 4x(x+3)+9(x+3) (x+3)(4x+9)

Hero
 4 years ago
Best ResponseYou've already chosen the best response.1This is called factoring by grouping. You do not need to guess at any point when factoring by grouping. you find the correct factors the very first time.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0so you look at the middle term, usually the one with only an x and you break it down?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0if this is true my only question is how do you know how far to break it down by.

Hero
 4 years ago
Best ResponseYou've already chosen the best response.1Yes, but you have to find the correct numbers to break it down to

Hero
 4 years ago
Best ResponseYou've already chosen the best response.1you only split the middle term into two numbers that will allow you to factor by grouping. When you factor by grouping you need four terms because you will factor what's common to the first two terms, then factor what's common to the last two terms.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0ok i understand. thanks for the explanation!
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