Question

$(x + 1)(x {}^{2} - x + 1) - x {}^{2}$
помогите пожалуйста ​

Answer 1

$\bf \: (x + 1)( {x}^{2} - x + 1) - {x}^{2} = {x}^{3} - {x}^{2} + x + {x}^{2} - x + 1 - {x}^{2} \huge = {x}^{3} - {x}^{2} + 1$