Question

x +7 x +12=0



$x ^{2} + 8x + 7 = 0$
$x ^{2} - 5x + 6 = 0$
$2 x ^{2} + 3x - 1 = 0$
$x^{2} + 6x + 8 = 0$
$x ^{2} - 12x + 20 = 0$
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Answer 1

Respuesta:

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