5m Zen
X 4 4x 2 12x 9 0
X 4 4x 2 12x 9 0 pictures 5
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X 4 4x 2 12x 9 0
x^4+4x^3-18x^2-12x+9u003d0
x 4 4x 3 2x 2 12x 9 0
x 4 4x 2 12x 9 0
