Skip to content / Đến nội dung
ThichHocToan.com

SEAMO 2027 - Paper F - SET 10 - Self-study Question 10

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

Question 10

Suppose $x,y$ are real numbers such that $x-y=8$ and $x^2+y^2=194$. Find $xy$.
  1. 65
  2. 67
  3. 71
  4. 73
  5. 81