Question 6
For a real number $a$ satisfying $a^2-5a-1=0$, compute $a^4-25a^2-10a+5$.
TIMO 2021 - Senior Secondary (Grades 10-12) - Preliminary Round - Paper 1 Question 6
TIMO · TIMO 2021 - Senior Secondary (Grades 10-12) - Preliminary Round - Paper 1