remainder theorem....?

[emily79]

Find the value of 'a' and 'b' and the remaining factor if the expression ax^3-11x^2+bx+3 is divisible by x^2-4x^2+3


do i simplify x^2-4x^2+3 and then substitute for x?

im so lostt!!!!

[Office_Shredder]

Definitely simplify it.

A good place to start: If one polynomial is divisible by another one, what does that say about their roots?