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айжансуперсая
@айжансуперсая
May 2022
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(4а+9b)^2+(9b+2)*(2-9b)=0 решите уравнение
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novo51
(4а+9b)²+(2+9b)*(2-9b)=0
16a²+72ab+81b²+4-81b²=0
16a²+72ab+4=0 :4
4a²+18ab+1=0
18ab=-1-4a²
b=(-1-4a²)/18a
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Answers & Comments
16a²+72ab+81b²+4-81b²=0
16a²+72ab+4=0 :4
4a²+18ab+1=0
18ab=-1-4a²
b=(-1-4a²)/18a