If x2-3x+2 be factor of x4-px2+q, then (p,q)=

x2-3x+2 be factor of x4-px2+q=0Hence (x2-3x+2)=0⇒(x-2)(x-1)=0⇒x=2, 1, putting these values in given equationso 4p-q-16=0   ....(i)and p-q-1=0    ..(ii)Solving (i) and (ii), we get [p,q]=[5,4]