Question

Simplify 1)  root 45 - 3 root 30 +4 Root 5

Answer 1

Answer:

$\sqrt{45} - 3 \sqrt{30} + 4 \sqrt{5} \\ = \sqrt{9 \times 5} - 3 \sqrt{30} + 4 \sqrt{5} \\ = 3 \sqrt{5} - 3 \sqrt{30} + 4 \sqrt{5} \\ = 7 \sqrt{5} - 3 \sqrt{30}$