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anonymous
 4 years ago
Factor: x^42x^3+x^2+8x5
Try it manually...how is it done?
anonymous
 4 years ago
Factor: x^42x^3+x^2+8x5 Try it manually...how is it done?

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ParthKohli
 4 years ago
Best ResponseYou've already chosen the best response.1Use the rational roots test?

ParthKohli
 4 years ago
Best ResponseYou've already chosen the best response.1Okay. The possible rational roots are: 5 5 1 1

ParthKohli
 4 years ago
Best ResponseYou've already chosen the best response.1Checking all of them. Gimme a sec.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0yeah, but it can still be factorised

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0into two quadratics... what's the point here?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Well...you're factoring it I guess you could get the roots But how do you get to the quadratics?

hartnn
 4 years ago
Best ResponseYou've already chosen the best response.2i may suggest a way, (x^2+ax+b)(x^2+cx+d) = x^42x^3+x^2+8x5 and compare the coefficients, 4 unknowns

ParthKohli
 4 years ago
Best ResponseYou've already chosen the best response.1Like for example, we have \(\sqrt2{}\) as a root, then a factor would be \(\rm x^2  2\).

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Well, @hartnn 's way is very good to get the quadratics
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