Question

Find the difference of 9 radical 7 and radical 28.

Answer 1

"radical" 28 = square root of 28 = \(\sqrt {28} = \sqrt{(2)(2)(7)} = \sqrt{(4)(7)}\)

that giving you any ideas so far?

Answer 2

kinda

Answer 3

\(\sqrt {(4)(7)} = 2\sqrt{7}\) and that you can combine with \(9 \sqrt 7\)

Answer 4

gotcha thanks