When 12x³ + Kx - 23x + 7 is divided by x -1, the remainder is 9. How would you find K?

Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter6: Fractions
Section6.7: Polynomial Long Division
Problem 38WE
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When 12x³ + Kx - 23x + 7 is divided by x -1, the remainder is 9. How would you find K?

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