Long Division Polynomials Question (1 Viewer)

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AirbusA380

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