x² - 13x + q = 0
x₁ = - 7
1) x₁ + x₂ = 13
x₂ = 13 - ( - 7) = 13 + 7 = 20
x₂ = 20
2) x₁ * x₂ = q
q = - 7 * 20 = - 140
q = - 140
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Verified answer
x² - 13x + q = 0
x₁ = - 7
1) x₁ + x₂ = 13
x₂ = 13 - ( - 7) = 13 + 7 = 20
x₂ = 20
2) x₁ * x₂ = q
q = - 7 * 20 = - 140
q = - 140