Question

what two whole numbers will $- \sqrt{72} }$lie on a number line.

Answer 1

Notice that the closest perfect squares to the square root of 72 are 64 and 81. Let's express it.

$64<\sqrt[]{72}<81$

So, if we take the square root of each number, we have.

$8<\sqrt[]{72}<9$

This means the square root of 72 is between 8 and 9. The image below shows a number line with the number.s