\(\sqrt{25}\) = 5 (perfect square ⇒ rational)
\(\sqrt{225}\) = 15 (perfect square ⇒ rational)
\(\sqrt{78}\) = 8.831760866 (irrational)
\(\sqrt{59}\) = 7.681145748 (irrational)
A rational number can be expressed in the way a : b or \(\frac{a}{b}\)
An irrational number cannot be expressed this way!
The two attachments are just worth looking at
