Question

calcula el valor numérico de los siguientes polinomios si x= -2, y= -4 y z=4
-2/3xy^3z^2+1/9x^3y^2z

Answer 1

(-2/3xy³z²)+(1/9x³y²z) =

[(-2/3)(-2)(-4³)(4²)]+[(1/9)(-2³)(-4²)(4)] =

[(-2/3)(-2)(-64)(16)]+[(1/9)(-8)(16)(4)] =

[(-2/3)(2,024)]+[(-8/9)(64)] =

(-4048/3)+(-512/9) =

(-12,144/9)+(-512/9) = -12,656/9 = -1406.2222...