Question

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Answer 1

Answer:

1+(-1)+(-3) = -3 = - (x² coefficient)/x³ coefficient

1×(-1)+(-1)×(-3)+(-3)×1 = -1 = x coefficient/x³ coefficient

1×(-1)×(-3) = 3

Step-by-step explanation:

$a {x}^{3} + b {x}^{2} + cx + d \\ \alpha + \beta + \gamma = \frac{ - b}{a} \\ \alpha \beta + \beta \gamma + \gamma \alpha = \frac{c}{a} \\ \alpha \beta \gamma = \frac{ - d}{a}$