\[\boxed{\text{579\ (579).\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
Пояснение.
Решение.
\[1)\ ( - 3m + 7n)^{2} =\]
\[= (7n - 3m)^{2} =\]
\[= 49n^{2} - 42mn + 9m^{2}\]
\[2)\ ( - 0,4x - 1,5y)^{2} =\]
\[= (0,4x + 1,5y)^{2} =\]
\[= 0,16x^{2} + 1,2xy + 2,25y^{2}\]
\[3)\ \left( - x^{2} - y \right)^{2} = \left( x^{2} + y \right)^{2} =\]
\[= x^{4} + 2x^{2}y + y^{2}\]
\[4)\ \left( - a^{2}b^{2} + c^{10} \right)^{2} =\]
\[= \left( c^{10} - a^{2}b^{2} \right)^{2} =\]
\[= c^{20} - 2a^{2}b^{2}c^{10} + a^{4}b^{4}\]