Question

X la a 3 a + X la a 2 a + X +1
Descompuneti in factori, grupand convenabil termenii

Answer 1

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