Question

5(4radical3-3radical5)-7(2radical3+4radical5)+2(3radical3+6radical5)​

Answer 1

$5(4 \sqrt{3} - 3 \sqrt{5} ) - 7(2 \sqrt{3} + 4 \sqrt{5} ) + 2(3 \sqrt{3} + 6 \sqrt{5} ) = 20 \sqrt{3} - 15 \sqrt{5} - 14 \sqrt{3} - 28 \sqrt{5} + 6 \sqrt{3} + 1 2\sqrt{ 5} = 12 \sqrt{3} - 31 \sqrt{5}$

Answer 2

Răspuns:

$\bf 12\sqrt{3} - 31\sqrt{5}$

Explicație pas cu pas:

Salutare!

$\bf 5 \cdot(4 \sqrt{3} - 3 \sqrt{5}) - 7 \cdot(2 \sqrt{3} + 4 \sqrt{5}) + 2 \cdot(3 \sqrt{3} + 6 \sqrt{5}) =$

$\bf 20\sqrt{3}- 15\sqrt{5}-14\sqrt{3}- 28\sqrt{5} + 6\sqrt{3}+ 12\sqrt{5}=</em></p><p></p><p><em>\</em><em>boxed{\bf 12\sqrt{3}</em><em>-31\sqrt{5}}$

==pav38==