Say there's a polynomial ax^4+bx^3+cx^2+dx+e=0.

Find a polynomial of degree 4 that has √2 + √7 as a root. That is, find integers a,b,c,d,e, so that x = √2 + √7 is a solution to the equation

 ax^4+bx^3+cx^2+dx+e=0.

1. Find all the roots of this polynomial.

Please explain answers so I understand