Let the function P be defined by P(x) = x³ +7x² - 26x - 72 where (x+9) is a
factor. To rewrite the function as the product of two factors, long division was used
but an error was made:
x² + 16x + 118
x+ +9)x³ +7x² −26x - 72
-x³ +9x²
16x² - 26x
-16x² + 144x
118x - 72
-118x + 1062
990
