Question

factorise this sum x3+x2+x+1?

Answer 1

hey mate here is ur ans
x3+x2+x+1=x2(x+1)+1(x+1)=(x+1)(x2+1)

hope it helps

Answer 2

(x3+x2) + (x+1)
now taking x2 common from first bracket
x2(x+1) + 1(x+1)
now
(x2+1)(x+1)
hence, factorised