Question

$x + 2 = \sqrt{ {x}^{2} } + 2 \sqrt{ {4}^{2} } + 8x + 2$
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Answer 1

Resposta:

$x + 2 = x + 2.4 + 8x + 2 \\ 0 = 8 + 8x \\ 8x = - 8 \\x = \frac{ - 8}{8} = - 1$