Question

$2 x^{2} +20x+18$

Answer 1

Olá Amanda

2x² + 20x + 18 = 0

x² + 10x + 9 = 0 

delta
d² = 100 - 36 = 64
d = 8

x1 = (-10 + 8)/2 = -2/2 = -1
x2 = (-10 - 8)/2 = -18/2 = -9 

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