Question

X2+10.-12=0
$\times 2 + 10 \times - 12 = 0$
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Answer 1

Resposta:

${ \times }^{2} + 10 - 12 = 0 \\ \\ {10}^{2} - 4 \times 1 \times ( - 12) \\ delta = 148 \\ - {10} \frac{ + - }{} \sqrt{148 } \\ 2 \times 1$