Question

X³-x²+ax+x-a-1 factorise it

Answer 1

Hi ,

x³ - x² + ax + x - a - 1

Rearranging the terms ,

= x³ + ax + x - x² - a - 1

= x ( x² + a + 1 ) - 1 ( x² + a + 1 )

= ( x² + a + 1 ) ( x - 1 )

I hope this helps you.

: )

Answer 2

Hi friend!!

x³-x²+ax+x-a-1

=x³+ax+x-x²-a-1

=x(x²+a+1)-1(x²+a+1)

=(x-1)(x²+a+1)

Therefore, (x-1) and (x²+a+1) are the required factors.

I hope this will help u ;)