Question

пожалуйста 3 и 4, срочно.

Answer 1

$3)sqrt{8-sqrt{28} }-sqrt{8+sqrt{28} }=sqrt{7-2sqrt{7} +1}-sqrt{7+2sqrt{7} +1} =sqrt{(sqrt{7}-1)^{2}}-sqrt{(sqrt{7} +1)^{2} }=|sqrt{7}-1|-|sqrt{7}+1|=sqrt{7}-1-sqrt{7}-1=-2$

$4)64^{frac{5}{6} }-(0,125)^{frac{1}{3} } -32*2^{-4}*16^{-1frac{1}{2} }+(3^{0})^{4}*4=(2^{6})^{frac{5}{6} } -(0,5^{3})^{frac{1}{3} }-2^{5}*2^{-4}*(2^{4})^{-frac{3}{2} }+1^{4}*4=2^{5}-0,5-2*2^{-6}+1=32-0,5-frac{1}{32}+1=33-0,5-0,03125=32,46875$