Toán Lớp 8: 5x^2-15x
TH1: 5x(x-3)
TH2: 5(x^2-3x)
TH nào đúng vậy
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Toán Lớp 8: 5x^2-15x
TH1: 5x(x-3)
TH2: 5(x^2-3x)
TH nào đúng vậy
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