Posted by Dan on Tuesday, May 21, 2013 at 1:34am.
A number is called algebraic if there is a polynomial with rational coefficients for which the number is a root. For example,√2 is algebraic because it is a root of the polynomial x^2−2. The number √2+√3+√5 is also algebraic because it is a root of a monic polynomial of degree 8, namely x^8+ax^7+bx^6+cx^5+dx^4+ex^3+fx^2+gx+h. Find a+b+c+d+e+f+g+h.

Math (Algebra)  Steve, Tuesday, May 21, 2013 at 12:11pm
If the coefficients are all rational, then the irrational roots must occur in conjugate pairs. So, the polynomial is
(x(√2+√3+√5))
(x(√2+√3√5))
(x(√2√3+√5))
(x(√2√3√5))
(x(√2+√3+√5))
(x(√2+√3√5))
(x(√2√3+√5))
(x(√2√3√5))
x^8  40x^6 + 352x^4  960x^2 + 576
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