\[\boxed{\text{177\ (177).}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[1)\ (7 - 5)^{2} = 2^{2} = 4.\]
\[2)\ 7^{2} - 5^{2} = (7 - 5) \cdot (7 + 5) =\]
\[= 2 \cdot 12 = 24.\]
\[3)\ (4 + 3)^{3} = 7^{3} = 343.\]
\[4)\ 4^{3} + 3^{3} = 64 + 27 = 91.\ \]