Math 209
posted by Anonymous .
f(x) = x3 + 2x2 – 0.4X – 1
how do you you factor this?

Is this supposed to be
f(x) = x^3 + 2x^2  .4x  1 ??
This does not factor, since
x^3 + 2x^2  .4x  1 = 0 does not have rational roots
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