Square root when changing the subject

Square root when changing the subject

Secondary 2
TGM Original Questions

Given \(r=\frac{4a-b^2}{3c}\):

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

Solution:

Solution locked

Sign in to view the step-by-step solution

Similar questions are unavailable for this question.
Answer:(a) \(r=\frac12\); (b) \(b=\pm\sqrt{4a-3cr}\).

Need help? Join our JC Math tuition classes.

Learn more