Question

factorise the following
(I) x^3+x+2​

Answer 1

Answer:

1 )

x³+x+2

=x³ + 1 + x +1. here use x³+y³ = (x+y)(x²-xy+ y²)

x³+ 1³ = (x+1)(x²-x+1)

=(x+1)(x²-x+1) + (x+1)

=(x+1) ( x² -x + 1+1) [taking x as common ]

= (x+1)( x² -x+2) ans.

hope it help