Question

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Answer 1

Resposta:

v(- 1; - 4).

Explicação passo a passo:

y = x² + 2x - 3

Δ = b² - 4ac

Δ = 2² - 4.1.(- 3)

Δ = 4 + 12

Δ = 16.

Para achar os vértices da parábola:

x = - b/2a

x = - 2/2.1

x = - 1.

y = - Δ/4a

y = - 16/4.1

y = - 4.

Os vértices são:

v(- 1; - 4).