Question

Care poate să-mi de-a răspunsurile va rog
e) √20+(3√10):(3√2)-√5 ?
c) 3•(√20+√3) - √3•(√5+√3) ?​

Answer 1

e)

$\sqrt{20} + (3 \sqrt{10} ) \div (3 \sqrt{2} ) - \sqrt{5 } \\ \sqrt{20 } + \sqrt{5} - \sqrt{5 } \\ \sqrt{20} \\ 2 \sqrt{5}$

C)

$3 \times ( \sqrt{20} + \sqrt{3} ) - \sqrt{3} \times ( \sqrt{5} + \sqrt{3} ) \\ 3 \times (2 \sqrt{5} + \sqrt{3} ) - \sqrt{15} - 3 \\ 6 \sqrt{5} + 3 \sqrt{3} - \sqrt{15} - 3$