Square root when changing the subject

Square root when changing the subject

Secondary 2
4 marks
TGM Original Questions

Given \(r=\dfrac{4a-b^2}{3c}\):

  1. find \(r\) when \(a=3,b=-3,c=2\)[2]
  2. express \(b\) in terms of \(a,c,r\).[2]

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) \(r=\dfrac12\) (b) \(b=\pm\sqrt{4a-3cr}\).

Need help? Join our JC Math tuition classes.

Learn more