Difference of squares under a root

Difference of squares under a root

Secondary 2
4 marks
TGM Original Questions

Optional extension

  1. Factorise \(p^2-q^2\).[1]
  2. Hence evaluate exactly \(\sqrt{8.6^2-1.4^2}\) without a calculator.[3]

Solution:

Solution locked

Sign in to view the step-by-step solution

Please join our E Math programme to search for similar questions for more practice.

E Math Tuition
Answer:(a) \((p-q)(p+q)\) (b) \(6\sqrt2\).

Need help? Join our JC Math tuition classes.

Learn more