x² + 9x - 11 = 0
x₁ + x₂ = - 9
x₁ * x₂ = - 11
x₁²x₂ + x₁x₂² = x₁x₂ * (x₁ + x₂) = - 11 * (- 9) = 99
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Verified answer
x² + 9x - 11 = 0
x₁ + x₂ = - 9
x₁ * x₂ = - 11
x₁²x₂ + x₁x₂² = x₁x₂ * (x₁ + x₂) = - 11 * (- 9) = 99