2013-II-03

16-06-2021 app.cch No Comments

Ans: D

\begin{array}{cl} h ℓ - k ℓ + h m - k m - h n + k n \\ = & ℓ (h - k) + m (h - k) - n (h - k) \\ = & (h - k) (ℓ + m - n) \end{array}

2013, HKDSE-MATH, Paper 2 Factorization