🎥 Video Solution:
📘 Simplify:
\[ (3\sqrt{5} – 5\sqrt{2})(4\sqrt{5} + 3\sqrt{2}) \]
✏️ Solution:
\[ = 12\cdot5 + 9\sqrt{10} – 20\sqrt{10} – 15\cdot2 \]
\[ = 60 + 9\sqrt{10} – 20\sqrt{10} – 30 \]
\[ = 30 – 11\sqrt{10} \]
✅ Final Answer: \(30 – 11\sqrt{10}\)