\[\boxed{\text{868.}\text{\ }еуроки - ответы\ на\ пятёрку}\]
\[\textbf{а)}\ 4x^{4} = \left( 2x^{2} \right)²\]
\[\textbf{б)}\ 0,25a^{4} = (0,5a^{2})²\]
\[\textbf{в)}\ 36m^{6} = (6m^{3})²\]
\[\textbf{г)}\ a^{2}b^{4} = (ab^{2})²\]
\[\textbf{д)}\ 9a^{4}b² = (3a^{2}b)²\]
\[\textbf{е)}\ 0,16x^{6}y^{4} = (0,4x^{3}y^{2})²\]