Question 983598
the basic structure to give those roots is x((x-1)^2)(x+2)=0
This is (x^2x)(x-2)^2=
x^4-3x^2+2x=0
7x^4-21x^2+14x=0
This is a fourth degree polynomial with leading coefficient 7 with those roots and a multiple root at x=1







{{{graph(300,300,-2,3,-20,20,7x^4-21x^2+14x)}}}