Verified answer

Explicação passo-a-passo:

[tex]m {x}^{2} - \frac{8}{m}x + 2 = 0[/tex]

[tex]a = m[/tex]

[tex]b = - \frac{8}{m} [/tex]

[tex]s = - \frac{b}{a} [/tex]

[tex]s = - ( - \frac{8}{m} ) \div m[/tex]

[tex]s = ( \frac{8}{m} ) \div m[/tex]

[tex]2 = \frac{8}{ m} \times \frac{1}{m} [/tex]

[tex]2 = \frac{8}{ {m}^{2} } [/tex]

[tex]2 {m}^{2} = 8[/tex]

[tex] {m}^{2} = \frac{8}{2} [/tex]

[tex] {m}^{2} = 4[/tex]

[tex]m = \sqrt{4} [/tex]

[tex]m = 2[/tex]