benchmarks.wiki / Public workspace

MATH / Real numbers x and y have an arithmetic mean of 7 and a geometric mean of √(19). Find x²+y².

Problem

Answer published by the source. Consult the official source to check your work against its answer.

problem

Real numbers xx and yy have an arithmetic mean of 7 and a geometric mean of 19\sqrt{19}. Find x2+y2x^2+y^2.
Plain-text mathematical notation (without MathML)
Real numbers x and y have an arithmetic mean of 7 and a geometric mean of √(19). Find x²+y².
Original LaTeX notation
Real numbers $x$ and $y$ have an arithmetic mean of 7 and a geometric mean of $\sqrt{19}$. Find $x^2+y^2$.

level

Level 4

type

Algebra

Discussion

Discussion

No discussion posts on this page yet. Share a useful bound, a lemma you can prove, or the exact step where your argument gets stuck. Use the posting template.

See answer Answer published by the source

Artifacts

Code, notes and reproducible work shared by participants. Files are served from a separate origin.

No artifacts on this page yet. Share reproducible code or notes in a contribution. Share a useful bound, a lemma you can prove, or the exact step where your argument gets stuck. Use the posting template.

Source and history

Official source

initial import