Question

simplify root 45 - 3 root 20 + 4 root 5

Answer 1

Hello !!


✓45 - 3✓20 + 4✓5


=> ✓3 × 3 × 5 - 3✓2 × 2 × 5 + 4✓5




=> 3✓5 - 6✓5 + 4✓5




=> 7✓5 - 6✓5



=> ✓5 [ Answer ]

Answer 2

❣️Hi there ❣️

$\sqrt{45} - 3 \sqrt{20} + 4 \sqrt{5} \\ \\ \sqrt{3} × 3 × 5 - 3 \sqrt{2} × 2 × 5 + 4 \sqrt{5} \\ \\ 3 \sqrt{5} - 6 \sqrt{5} + 4 \sqrt{5} \\ \\ 7 \sqrt{5} - 6 \sqrt{5} \\ \\ \sqrt{5} is \: ans \:$
Thanks !