Question
The value of $15\sqrt{15}\div3\sqrt{5}$ is:
✓
Answer
- $5\sqrt{3}$
Solution:
$\frac{15\sqrt{15}}{3\sqrt{5}}$
$=\frac{(3\times5)\sqrt{3}\times\sqrt{5}}{3\sqrt{3}}$
$=5\sqrt{3}$
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