Question

simplify this
$(3 \sqrt{5} - 5 \sqrt{2})(4 \sqrt{5} + 3 \sqrt{2})$
please slove this​

Answer 1

Answer:

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Answer 2

$(3 \sqrt{5} - 5 \sqrt{2})(4 \sqrt{5} + 3 \sqrt{2}) \\ = 3 \sqrt{5} (4 \sqrt{5} + 3 \sqrt{2}) - 5 \sqrt{2} (4 \sqrt{5} + 3 \sqrt{2}) \\ = 60 + 9 \sqrt{10} - 20 \sqrt{10} - 30 \\ = 30 - 11 \sqrt{10}$