Question

Fatorando x²+2+1/x²,obtemos
a) (x+1)² b) (x-1/x)² c) (x²+1)² d) (x+1/x)²
Explique

Answer 1

${x}^{2} + 2 +\frac{ 1 }{ {x}^{2} } = \\ {(x)}^{2} + 2 \times x \times \frac{1}{x} + {( \frac{1}{x}) }^{2} = \\ {(x + \frac{1}{x}) }^{2}$

alternativa D