Question

Помогите решить 15 задание!!

Answer 1

${x}^{5} + x - 1 = \ {x}^{5} - {x}^{4} + {x}^{4} - {x}^{3} + {x}^{3} - \ - {x}^{2} + {x}^{2} - x + x - 1= \ = {x}^{2} ( {x}^{3} + {x}^{2} - 1) - \ - x( {x}^{3} + {x}^{2} - 1) + \ + ( {x}^{3} + {x}^{2} - 1) = \ = ( {x}^{3} + {x}^{2} - 1)( {x}^{2} - x + 1)$

Answer 2

Огромнейшее спасибо))