Question 444617
1) 5,-1,3
x-5=0 x+1=0 x-3=0
(x-5)(x+1)(x-3)=0
{{{x^(3)-7*x^2+7*x+15=0}}}
...
2) 1,7,-5
x-1=0 x-7=0 x+5=0
(x-1)(x-7)(x+5)=0
{{{x^(3)-3*x^2-33*x+35=0}}}