1) (0.5х^2)^2
2) (7а^3)^2
3) (2mn^2)^2
4) (0.2а^3b^2)^2
Ответ:
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-1,6n^{9}*a^{2}*(-1,1n^{5}*a^{4}) = 1.76 * n^{14} * a^{6}