Question

(x² + x +1) (x2 -x + 1).​

Answer 1

Answer:

$\sf { ({x}^{2} + x + 1)}^{2}$

$\sf {x}^{2 ^{2} } + {x}^{2} + {1}^{2} + {x}^{2} \times x + x \times 1 + {x}^{2}$

$\sf {x}^{4} + {x}^{2} + 1 + {x}^{3} + x + {x}^{2}$

Answer 2

Answer:

${x}^{2} ( {x}^{2} - x + 1) + x( {x}^{2} - x + 1) + 1( {x}^{2} - x + 1)$

$= {x}^{4} - {x}^{3} + {x}^{2} + {x}^{3} - {x}^{2} + x + {x}^{2} - x + 1$

$= {x}^{4} + {x}^{2} + 1$

Hope it helps you.