Question

помагите даю 40 баллов

Answer 1

$3 \sqrt{576}- \frac{1}{2} \sqrt{961} =3 \sqrt{ 24^{2} }- \frac{1}{2} \sqrt{ 31^{2} } =3*24- \frac{1}{2}*31=72-15,5=$$=56,5\\\\1,4 \sqrt{289} +19 \sqrt{625} =1,4 \sqrt{ 17^{2} }+19 \sqrt{ 25^{2} }=1,4*17+19*25=23,8+$$475=498,8$

$5 \sqrt{ \frac{225}{16} } - \sqrt{ \frac{1089}{64} } =5 \sqrt{( \frac{15}{4} ) ^{2} }- \sqrt{( \frac{33}{8} ) ^{2} } =5* \frac{15}{4} - \frac{33}{8} =18,75 -4,125$$=14,625$

$\frac{1}{11} \sqrt{ \frac{3025}{4} } +23 \sqrt{ \frac{36}{529} }- \sqrt{ \frac{289}{16} } = \frac{1}{11} \sqrt{( \frac{55}{2} ) ^{2} }+23 \sqrt{( \frac{6}{23}) ^{2} }- \sqrt{( \frac{17}{4}) ^{2} } =$$\frac{1}{11} * \frac{55}{2}+23* \frac{6}{23}- \frac{17}{2}=2,5+6-8,5 =-0,5$