Enrich · Mathematics Extension 1 11–12 – Year 11 · Polynomials
Enrich Prove that if a cubic P(x) = ax³ + bx² + cx + d has three zeroes α, β, γ, then α + β + γ = - b/a, αβ + βγ + γα = c/a and αβγ = - d/a
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