4 Efectuați calculele: a)
[tex]3 \sqrt{5} \times 2 \sqrt{2} + \sqrt{200} \times \sqrt{20} - 12 \times 2 \sqrt{10} - \sqrt{30} \div \sqrt{3} [/tex]

b)
[tex] (\frac{3}{ \sqrt{3} } + \frac{6}{ \sqrt{12} } - \frac{60}{ \sqrt{48} } ) \times \frac{30}{2 \sqrt{75} } [/tex]
20 de puncte
Vă rog frumos, am nevoie urgent ​