Cum se face, ca nu stiu

Cum Se Face Ca Nu Stiu class=

Răspuns :

[tex] \sqrt[3]{ {x}^{3} + x + 1} = x \: | {( \: )}^{3} [/tex]

[tex] {x}^{3} + x + 1 = {x}^{3} [/tex]

[tex]x + 1 = 0[/tex]

[tex]x = - 1[/tex]

[tex] \sqrt[3]{ {x}^{3} + x + 1 } = x \\ \\ \sqrt[3]{ {x}^{3} + x + 1 } ^{3} = {x}^{3} \\ \\ {x}^{3} + x + 1 = {x}^{3} \\ \\ x + 1 = 0 \\ \\ x + 1 - 1 = 0 - 1 \\ \\ x = - 1 [/tex]