Question

Which square root is NOT a whole number?

Answer 1

$1)\\a.\ \sqrt{144}=12\in\mathbb{Z}\\b.\ \sqrt{156}\notin\mathbb{Z}\\c.\ \sqrt{169}=13\in\mathbb{Z}\\d.\ \sqrt{1962}\notin\mathbb{Z}\\\\2)\\x^3=216\to x=\sqrt[3]{216}\to x=6\to a.\\\\3)\\\sqrt[3]{216}=6\to b.\\\\4)\\x^2=10\to x=\pm\sqrt{10}\\\\5)\\x^3=27\to x=\sqrt[3]{27}\to x=3\to a.$