Question 6
Find the coefficient of $x^2$ in $(x^2+2x-2)^4$.
HKIMO 2019 THPT (Grades 10–12 shared) National Final (Heat) Set 02 Question 6
HKIMO · HKIMO 2019 THPT (Grades 10–12 shared) National Final (Heat) Set 02
HKIMO · HKIMO 2019 THPT (Grades 10–12 shared) National Final (Heat) Set 02