Factorise x^4-14x^3+31x^2-154x+120 using factor theorem
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Determine all positive and negative zeros of: a) f(x) = x4-14x3+71x2-154x +120 ... Find the possible rational zeros & use Descartes to narrow it down. a)x4–4x3- x2+14x +10= 0 P +/- 10, 5, ...
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