Simplify \(\sqrt{30}\) × \(\sqrt{40}\)
- 10 √3
- 5 √3
-
20 √3
- 15 √3
The correct answer is: C
Explanation
\(\sqrt{30}\) × \(\sqrt{40}\)
= \(\sqrt{(30 × 40)}\)
\(\sqrt{(3 × 10 × 4 × 10)}\)
\(\sqrt{(400 × 3)}\)
\(\sqrt{400}\) × \(\sqrt{3}\)
20 × \(\sqrt{3}\)
20\(\sqrt{3}\)
There is an explanation video available .