помогите пожалуйста даю 30 баллов !!!!!!!!!!!!

только с решением ТОЛЬКО С РЕШЕНИЕМ ПРОСТО ОДНИ ОТВЕТЫ НЕ ПОЙДУТ!!!!!!!!!!!

а) ‒ 1,9a²b⁴ · (‒ 2,1bа²¹ ) =


в) ‒2,5m⁷n³b² · ( 1,3mn⁶b⁸) =


б) 14pk³а⁹ · ( ‒ 0,01p⁵k⁴а) =


г) 1,4p⁷rs · ( ‒1,7pr¹¹) =


д) 3,5 m⁴r¹² · ( ‒0,02m⁵ra⁷) =


e) ‒ 9a⁵b⁸ · ( ‒0,03a⁹b⁷m) =


ж) 8р³b⁴ · ( ‒1,17ab⁷p⁶) =



заранее спасибо 111111111111111!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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