Question

Funcao do segundo grau y= -x2 + 6x - 9
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Answer 1

Resposta:

$y = {x}^{2} + 6x - 9 \\ a = 1 \\ b = 6 \\ c = - 9 \\ delta \: \: {6}^{2} - 4 \times 1 \times ( - 9) \\ 36 - 4 \times 1 \times ( - 9) \\ 36 + 52 \\ 88$