Trang chủ » Hỏi đáp » Môn Toán 6x – 12y x^2 – 2x + 1 2 ( x – y ) + a ( y – x ) 3x – 3y + ax – ay 23/03/2025 6x – 12y x^2 – 2x + 1 2 ( x – y ) + a ( y – x ) 3x – 3y + ax – ay
6x-12y =6(x-2y) ________ x^2-2x+1 = (x-1)^2 _________ 2(x-y)+a(y-x) = 2(x-y)-a(x-y) = (x-y)(2-a) __________ 3x-3y+ax-ay = (3x-3y)+(ax-ay) = 3(x-y)+a(x-y) = (x-y)(3+a) Trả lời
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