Resposta:
[tex] \sqrt{x} {}^{2} +2 = x + 1 \\ x {}^{2 } + 2 = x {}^{2} + 2x \: + 1 \\ 2 = 2x + 1 \\ - 2x = 1 - 2 \\ - 2x = - 1 \\ \frac{1}{2} [/tex]
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Resposta:
[tex] \sqrt{x} {}^{2} +2 = x + 1 \\ x {}^{2 } + 2 = x {}^{2} + 2x \: + 1 \\ 2 = 2x + 1 \\ - 2x = 1 - 2 \\ - 2x = - 1 \\ \frac{1}{2} [/tex]