Question

$9m ^{2} - 2m(m - 3) + 7m(1 - m)$
$5a ^{4} - 8a^{3} (a - 3) + (a^{2} + 5a) \times 5a^{2}$
решите пожалуйста срочно надо!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!


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Answer 1

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