Решите уравнение 3x^2+3x-6

Question

Решите уравнение 3x^2+3x-6

Answer 1

3x² + 3x - 6 = 0
x² + x - 2 = 0
D = b² - 4ac = 1²  - 4 × 1 × ( - 6) = 1 + 24 = 25 = 5²
x₁ = ( - 1 + 5) / 2 = 2
x₂ = ( - 1 - 5) / 2 = - 3

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