Long Division Polynomials Question (1 Viewer)

[AirbusA380]

11 Find the value of a so that the remainder will be 4791 if 5x4 − 12x3 + 5x2 − ax + 1 is divided by x + 5. I cant seem to work it out, helpppp?

 

[wgy182]

Sub in -5 for x and make the equation equal 4791. Then solve for a.
I think a=8

 

[AirbusA380]

Sub in -5 for x and make the equation equal 4791. Then solve for a.
I think a=8

Yep, 8. Thanks so much mate. im not sure why i didnt think of that. Its easyyy.