Question

Si: (x - 3)³ ≡ mx³ + nx² + px + q Hallar: (m + n)(p + q)

Answer 1

x3-3x2-9x-27=mx3+nx2+px+q

mx3=x3....m=1

mx2= 3x2... n=-3

px=9x....p=-9

q=-27

m+n=-2. p+q=-36

(-36)(-2)= 72