P₁(s) =s⁶+7s⁵+2s⁴+9s³+10s²+12s+15 and P₂(s) =s⁶+9s⁵+8s⁴+9s³+12s²+15s+20
Evaluate P₃=P₁-P₂P₄=P₁+P

Respuesta :