Question 9
Let $x$ be real with $x^2+\frac1{x^2}=4$. Find $x^4+\frac1{x^4}$.
TIMO - 2021 - Grade 7 - Preliminary Round - Paper 5 Question 9
TIMO · TIMO - 2021 - Grade 7 - Preliminary Round - Paper 5
TIMO · TIMO - 2021 - Grade 7 - Preliminary Round - Paper 5