Question

a) (x + 1) (x² + x + 1)​

Answer 1

Answer:

x³ + 2x² +2x + 1

Step-by-step explanation:

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