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KE8717504
Group Title
Find all positive and negative integers b such that 7x^2+bx+5 factors. B= (use comma's to seperate answers)
 one year ago
 one year ago
KE8717504 Group Title
Find all positive and negative integers b such that 7x^2+bx+5 factors. B= (use comma's to seperate answers)
 one year ago
 one year ago

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Shi Group TitleBest ResponseYou've already chosen the best response.0
I think you should start by using the quadratic formula, though I think there might be a better way
 one year ago

KE8717504 Group TitleBest ResponseYou've already chosen the best response.0
what's the better way?
 one year ago

ArkGoLucky Group TitleBest ResponseYou've already chosen the best response.0
take the factors of 7 and 5 and mess with them to get all the possible b's
 one year ago

KE8717504 Group TitleBest ResponseYou've already chosen the best response.0
the only factors of 7 are 1 and 7 and the only factors of 5 are 1 and 5
 one year ago

KE8717504 Group TitleBest ResponseYou've already chosen the best response.0
so how would i list that?
 one year ago

ArkGoLucky Group TitleBest ResponseYou've already chosen the best response.0
the answers are 12, 12, 2 and 2 I think. check if that's right
 one year ago

KE8717504 Group TitleBest ResponseYou've already chosen the best response.0
12, 12, 36, 36
 one year ago

ArkGoLucky Group TitleBest ResponseYou've already chosen the best response.0
36 doesn't work try factoring it
 one year ago

Shi Group TitleBest ResponseYou've already chosen the best response.0
7x^2 + 35x + x + 5 7x(x+5) + 1(x+5) (7x+1)(x+5)
 one year ago

Shi Group TitleBest ResponseYou've already chosen the best response.0
I don't think I've had this problem before but http://www.algebra.com/algebra/homework/Polynomialsandrationalexpressions/Polynomialsandrationalexpressions.faq.question.177236.html shows you how to get your solution
 one year ago
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