29 is great

Algebra Level 4

\[\left( { r }_{ 1 }+29 \right) \left( { r }_{ 2 }+29 \right) \left( { r }_{ 3 }+29 \right) \left( { r }_{ 4 }+29 \right) \]

Let \(r_1, r_2, \ldots,r_{4} \) be the roots of \({ x }^{ 4 }+7{ x }^{ 3 }-2{ x }^{ 2 }+3x+17\)