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bergausstein
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- Jul 30, 2013
- 191
any hints on how to start this problem?
$12x^4+19x^3-26x^2-61x-28$
$12x^4+19x^3-26x^2-61x-28$
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Is that $12x^2$ perhaps a typo for $12x^4$?any hints on how to start this problem?
$12x^2+19x^3-26x^2-61x-28$
Start by looking for integer roots of the polynomial (factors of the constant term). If you find any, then the factor theorem gives you linear divisors of the polynomial.
True, but I like an easy life, so I look for the simplest possible solutions first.The roots may not be INTEGERS, as the leading term's coefficient is not 1.....
Any hints on how to start this problem?
$\text{Factor: }\:f(x) \:=\:12x^4+19x^3-26x^2-61x-28$
I've never heard of this method and google comes up with nothing. Can you give us a quick run-down?i will use dorobostikerlines method.,
$12(x^2-1)^2+19(x^2-1)(x+1)-21(x+1)^2$
i'll let you continue.