Question

Does anyone know what to do

Answer 1

ok, we need to factor the expression

${y}^{5} - 2 {y}^{4} - cxy + 6x = {y}^{4} (y - 2) - x(cy - 6)$

since the expression divisible by y-2, then

$cy - 6 = k(y - 2)$

since 6=2k, then k=c=3