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Đưa về phương trình tích: f(x)=3x^2-2x-1
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Đưa về phương trình tích: f(x)=3x^2-2x-1

User Zoowalk
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1 Answer

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f(x)=3x²+x-3x-1

=x(3x+1)-(3x+1)

=(x-1)(3x+1)

User Yxre
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