p(x)81+27√2x^7-45 x^3-x^3+2x^2+5x-6+8÷3 find A. qn^-1 ,Qn^-3,Qn^-4 ,Qn^-4, Q0 ,B. Head of Coefficient C. degree of p(x) D. Coefficient of X^5 pls answer briefly