Question

выполните действие: (√2+√10)^2

Answer 1

$12+sqrt{80}$ - точно.

Answer 2

$(sqrt{2}+sqrt{10})^2=\\=(sqrt{2})^2+2*sqrt{2}*sqrt{10}+(sqrt{10})^2=\\=2+2sqrt{20}+10=\\=12+2sqrt{4*5}=\\=12+4sqrt{5}=4*(3+sqrt{5})$