Question 6
Positive integers satisfy $ab+bc=21$, $bc+ca=25$, $ca+ab=16$. Find $30\left(\dfrac{ab}{c}+\dfrac{bc}{a}+\dfrac{ca}{b}\right)$.
SEAMO X 2020 — Paper E — Grade 9–10 Question 6
SEAMO · SEAMO X 2020 — Paper E — Grade 9–10
SEAMO · SEAMO X 2020 — Paper E — Grade 9–10