Skip to content / Đến nội dung
ThichHocToan.com

SEAMO 2027 - Paper D - SET 10 - Self-study Question 4

SEAMO · SEAMO 2027 - Paper D - SET 10 - Self-study

Question 4

Given $x/2=y/3=z/5$, where $x,y,z$ are nonzero, find $$\frac{xy-2yz+xz}{x^2-2y^2+z^2}.$$
  1. $-\frac{11}{13}$
  2. $-\frac{14}{11}$
  3. $0$
  4. $\frac{11}{14}$
  5. $\frac{14}{25}$