If the polynomial is divided by another polynomial the remainder comes out to be find and

We know that,

=

And ,

=

So,

Either

Put

= 2k = 10

= k =

Put

= 10 – a – 8 × 5 + 25 = 0

= 10 – a – 40 + 25 = 0

= - 5 – a = 0

= a =

Hence,