Abdmood Abdmood
  • 24-02-2022
  • Mathematics
contestada

solve each equation in the real number system
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solve each equation in the real number system class=

Respuesta :

algebraic12 algebraic12
  • 24-02-2022

Step-by-step explanation:

[tex] - x {}^{3 } - {x}^{2} + x + 1[/tex]

[tex] - {x}^{2} ( x + 1) + 1(x + 1)[/tex]

[tex](1 - {x}^{2} )(x + 1) = 0[/tex]

[tex](1 - x)(1 + x)(x + 1) = 0[/tex]

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

[tex]x = 1[/tex]

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

[tex]x = - 1[/tex]

[tex]x = - 1[/tex]

So we have the answer of

-1 and 1.

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