Question

AJUDEM PRFVVVVVVVVVVV URGENTE

Answer 1

Resposta:

${x}^{2} + 4x = 5 \\ {x}^{2} + 4x - 5 = 0 \\ delta = {4}^{2} - 4 \times 1 \times ( - 5 )\\ 16 + 20 = 36 \\ \frac{ - 4 + ou - \sqrt{36} }{2} \\ x = \frac{ - 4 + 6}{2} \\ x = \frac{2}{2} = 1 \\ x = \frac{ - 4 - 6}{2} \\ x = \frac{ - 10}{2} = - 5$