Question

(x + 1 ) (x − 1 ) (x2 + 1 ) x x b)

Answer 1

Answer:

x

2

−x+1

x+1

x−1

x+1

∣

∣

∣

∣

∣

∣

=(x

2

−x+1)(x+1)−(x−1)(x+1)=x

3

+1−(x

2

−1)=x

3

−x

2

+2