Question

x . x = x / 2 . 8 / 1​

Answer 1

Resposta: S {0;4}

Explicação passo-a-passo:

$x \times x = \frac{x}{2} \times \frac{8}{1} \\ \\ {x}^{2} = \frac{8x}{2} \\ {x}^{2} - \frac{8x}{2} = 0 \\ x(x - \frac{8}{2} ) = 0 \\ x - \frac{8}{2} = 0 \\ x - 4 = 0 \\ x = 4$