Question 6
Find $z$ if $|2020-2x+y|+(x-y-2021)^2+\sqrt{x+y+z}=0$.
HKIMO 2026 THPT (Grades 10–12 shared) National Preliminary Set 03 Question 6
HKIMO · HKIMO 2026 THPT (Grades 10–12 shared) National Preliminary Set 03
HKIMO · HKIMO 2026 THPT (Grades 10–12 shared) National Preliminary Set 03