## Precalculus (6th Edition)

The statement given is false. A true statement would be: $\sqrt{-4}\cdot\sqrt{-9}=6$
$\sqrt{-4}\cdot\sqrt{-9}=-6$ Evaluate the product on the left side and simplify: $\sqrt{(-4)(-9)}=-6$ $\sqrt{36}=-6$ $6\ne-6$ False A true statement would be: $\sqrt{-4}\cdot\sqrt{-9}=6$