Real numbers, grade 9, Question 20

27/01/2017 Grade 9 5,502

Consider the following:

\begin{array}{l}<br />
A =3\sqrt{18}-2\sqrt{32}+5\sqrt{50}\\<br />
B =3\sqrt{20}-2\sqrt{45}+\sqrt{80}\end{array}

  1. Simplify each of A and B.
  2. A

    \sqrt {10}

    B C

Find C if the given table is inversely proportional.