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Algebraic! Group TitleBest ResponseYou've already chosen the best response.1
x^4+8x^220 ..?
 one year ago

dellzasaur Group TitleBest ResponseYou've already chosen the best response.0
Were doing some cubic stuff in class lol
 one year ago

dellzasaur Group TitleBest ResponseYou've already chosen the best response.0
its x^4+8x^220 @Algebraic!
 one year ago

Algebraic! Group TitleBest ResponseYou've already chosen the best response.1
substitute u =x^2
 one year ago

mathstudent55 Group TitleBest ResponseYou've already chosen the best response.0
Start wit a substitution to make it simpler: Let u = x^2, then u^2 = x^4. Now re3place the x's with the u's: u^2 + 8u  20 Can you factor that one?
 one year ago

dellzasaur Group TitleBest ResponseYou've already chosen the best response.0
@mathstudent55 Im not sure.... My teacher didnt really go over this so i have no idea. Would I pull out a 4?
 one year ago

Algebraic! Group TitleBest ResponseYou've already chosen the best response.1
u^2 + 8u  20 is a quadratic... you've factored a lot of those by now I think....
 one year ago

Algebraic! Group TitleBest ResponseYou've already chosen the best response.1
what two number multiply to give 20 and add to give 8?
 one year ago

dellzasaur Group TitleBest ResponseYou've already chosen the best response.0
@Algebraic! 10 and 2
 one year ago

Algebraic! Group TitleBest ResponseYou've already chosen the best response.1
(u+10)(u2) = (x^2 +10)(x^2 2)
 one year ago

Algebraic! Group TitleBest ResponseYou've already chosen the best response.1
(x^22) is a difference of squares.. so you can factor that ...
 one year ago

dellzasaur Group TitleBest ResponseYou've already chosen the best response.0
@Algebraic! Okay so what would i do with the other equation?
 one year ago

Algebraic! Group TitleBest ResponseYou've already chosen the best response.1
(x^2+10) ? no real roots...
 one year ago
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