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Андреe
@Андреe
November 2021
2
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Упростите выражение:
2a(a+b-c)-2b(a-b-c)+2c(a-b+c)
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Воробушек666
2а²+2аb-2ac-2ba+2b²+2bc+2ca-2cb+2c²= 2a²+2b²+2c²
2 votes
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Андреe
Это не окончательный ответ... Там взаимоунечтожаться должны, доведите до конца
Checov7400
2(а²+ав-ас-ав+в²+вс+ас-вс+с²)=2(а²+в²+с²)
1 votes
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