September 2021 0 9 Report
Вычислите значения выражения  (а-b)²+2(a-b)b+b² если а=0,3 Докажите тождество (a²-c)²+2(a²-c)(a²+c)+(a²+c)²=4a^4 (a+x-y)²-(a-x+y)²=4a(x-y)
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