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dadashov68
@dadashov68
July 2021
1
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7с(4с+2)-(7+с)^ помогите пожааалуйста решить))
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zhenyaM2002
Verified answer
7с (4c+2) - (7+c)^2 =
=28 c^2 +14 c - ( 49 +2*7*c+c^2)=
= 28 c^2+ 14 c -49 -14c-c^2=
= 27 c^2- 49
2 votes
Thanks 1
dadashov68
должно получится 27с^-49
zhenyaM2002
Уже исправил...
zhenyaM2002
Обнови страничку и исправь, если есть желание. )
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Answers & Comments
Verified answer
7с (4c+2) - (7+c)^2 ==28 c^2 +14 c - ( 49 +2*7*c+c^2)=
= 28 c^2+ 14 c -49 -14c-c^2=
= 27 c^2- 49