- #1
TFM
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Homework Statement
Factroise equation
Homework Equations
The Attempt at a Solution
Can anyone help shopw me the best way to factorise cubic equations? I am doing a question on matrices, and have a 3x3 matrix, which ends up giving me a cubic equation:
[tex] -x^3 +10x^2 - 27x + 18 [/tex]
It should be in the from (-x + a)(x + b)(x + c)
but when I multiply these out, I get a very confusing function that doesn't seem to help:
[tex] abc + (acx - bcx + abx) - (x^2 + ax^2 - bx^2) - x^3 [/tex]
Any ideas for a better way to solve these?
Any help will be most appreciated,
TFM