Two-variable factorisation for evaluation

Two-variable factorisation for evaluation

Secondary 2
TGM Original Questions
  1. Factorise \(12a^2+7ab-10b^2\) completely.
  2. Hence evaluate \(12(13)^2+7(13)(7)-10(7)^2\) without expanding the squares directly.

Solution:

Solution locked

Sign in to view the step-by-step solution

Similar questions are unavailable for this question.
Answer:(a) \((4a+5b)(3a-2b)\); (b) \(2175\).

Need help? Join our JC Math tuition classes.

Learn more