Posted by hattie on .
)Find a value of s such that x – 4 is a factor of f(x) = x3  2x2+ sx + 4.

algebra 
Steve,
division reveals that the remainder is 4s+36
so, if s = 9, the remainder is zero.
check:
x^3  2x^2  9x + 4 = (x4)(x^2 + 2x  1)