Library / /29 of 413

, 2008

Algebra Difficulty 1.0 Junior Find the answer Canada

The value of $(1 + 2)^2 - (1^2 + 2^2)$ is

(A) $14$ (B) $4$ (C) $2$ (D) $12$ (E) $1$

Want a route through all this instead of an archive? The track puts 2,604 problems in a working order, from Junior Challenge level to the IMO shortlist.

Source: CEMC, University of Waterloo, licensed CC-BY-NC-4.0. Statement reproduced verbatim; metadata (topic, difficulty) added by this project. Solutions are the publisher's, linked not copied.