Question

When evaluated, which expression has a result that is a rational number?

a. √3 + 6
b. √36 - π
c. √144 x 0.25
d. √4 ÷ √2

Answer 1

hint:
\(\pi\) is an irrational number, furthermore also \( \sqrt 3 \) and \( \sqrt 2\) are irrational numbers.
Finally: \(\sqrt 144=12\) and \( \sqrt 4 = 2\)