Sum of the squares of three numbers is 138 and the sum…

Sum of the squares of three numbers is 138 and the sum of their products taken two at a time is 131. Find the sum?

This problem repeats another one in the library (at most with different numbers), so it's left out of browsing.

AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #8622