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anonymous
 4 years ago
how do is solve this
13x^238x3
anonymous
 4 years ago
how do is solve this 13x^238x3

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Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.1Do you mean how to factor it?

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.1Do you know that trinomials come from multiplying two binomials?

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.1So we know it would be ( )( )

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.1We also know that one sign would have to be positive and one negative since the last term is negative. Still with me?

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.1Now how could we possibly get 13x^2 ?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0you can do this by grouping with the ac method: ax^2+bx+c a=13 c=3 ac=39x^2 Find two factors of 39 that add up to 38 The factors are 39x and +1x To group, rewrite the equation 13x^239x+1x3 remove like variables 13x(x3)+1(x3) remove (x3) as a factor and combine 13x+1: (x3)(13x+1)

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.1The first term of the trinomial we are trying to factor is 13x^2. So we have to multiply 2 factors that will give us 13x^2 . What might they be?

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.1Oh. I see that rickjbr wants to help you now so I'll turn you over to him.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0didn't mean to jump in

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0so who's going to help me?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0ok so i don't understand why it is (x3)(13x+1)

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0if you expand those two binomials, youll get back to your original trinomial using the FOIL method

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.013x^2+1x39x3= 13x^238x3

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0oh i got it i was just confusing myself
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