Question

преобразуйте
1)(√7-1)(√7+1)
2) √75/√6
3) (3√2)^3
4) √64-√12+√75

Answer 1

$( sqrt{7}-1)( sqrt{7}+1)=7-1=6 \ frac{ sqrt{75} }{ sqrt{6} } = frac{ sqrt{75} }{ sqrt{6} } = sqrt{12,5} \ (3 sqrt{2})^3=27 sqrt{8}=54 sqrt{2} \ sqrt{64} - sqrt{12} + sqrt{75}=8-2sqrt{3} +5 sqrt{3}=8 +3 sqrt{3}$

Answer 2

Спасиб помог)