Problem #158

Find a polynomial with integer coefficients and lowest possible degree
that has 2^{1/2} + 3^{1/2} = sqrt(2) + sqrt(3) as a root.

Find a polynomial with integer coefficients and lowest possible degree that has
2^{1/2} + 3^{1/2} + 5^{1/2} as a root.

Find one that has 2^{1/3} + 3^{1/3} as a root.