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мимо9
@мимо9
August 2021
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помогите пожалуйста ЭТО СРОЧНО!!!!!
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gyunayasadova
50с²+2(5с-3)²=50с²+2(25с²-30с+9)=50с²+50с²-60с+18=100с²-60с+18
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Thanks 1
tripsw752
A)50c^2+2(5c-3)^2
50^c2+50c^2-60c+18
100c^2-60c+18
б)(2a+7)(2a-7)-2a(4-2a)
4a^2-14a+14-49
4a^2-49-8a+4a^2
8a^2-8a-49
в)(2x+3)(3-2x)-(2x-5)-10x
-4x+9-4x^2+20x-25-10x
-4x^2+6x-16
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Answers & Comments
50^c2+50c^2-60c+18
100c^2-60c+18
б)(2a+7)(2a-7)-2a(4-2a)
4a^2-14a+14-49
4a^2-49-8a+4a^2
8a^2-8a-49
в)(2x+3)(3-2x)-(2x-5)-10x
-4x+9-4x^2+20x-25-10x
-4x^2+6x-16