Skip to content / Đến nội dung
ThichHocToan.com

PIMSO 2025 - Mathematics - Secondary 2 - National Round Question 8

PIMSO Maths · PIMSO 2025 - Mathematics - Secondary 2 - National Round

Question 8

If $x=\sqrt{9+4\sqrt5}$, determine the value of $\frac{x^2+2x}{x^2+x-6}$. Hint! Simplify x in the form $\sqrt a+\sqrt b$.
  1. $\frac{17+7\sqrt5}{20}$
  2. $\frac{7+17\sqrt5}{25}$
  3. $\frac{17-7\sqrt5}{20}$
  4. $\frac{7-17\sqrt5}{20}$