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anonymous
 one year ago
what are the factors of 4x2 + 5x − 6?
anonymous
 one year ago
what are the factors of 4x2 + 5x − 6?

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0thank you what did you do to get that

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.0factoring is kind of a "guess and check method" but here's the method I use

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.0dw:1444346840572:dw

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.0first, I look at the x^2 term we have 4x^2, so I pick two factors of 4 to go on the left ends of the cross

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.0dw:1444346886217:dw

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.0then I look at the last term (6) and write two factors on the other end

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.0dw:1444346933724:dw

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.0dw:1444346999628:dw

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.0now I look at the middle term (5x), and since I have 5 here, I guessed the right factors.

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.0now, reading across the giant X, I get:dw:1444347057499:dw

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.0TLDR it's a guessandcheck method
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