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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 8: bài 1 a,(2xy-3x ²) b, $\frac{1}{2}$x+ $\frac{1}{3}$) ²

Toán Lớp 8: bài 1
a,(2xy-3x ²)
b, $\frac{1}{2}$x+ $\frac{1}{3}$) ²

Comments ( 2 )

  1. Mong bạn cho mình cảm ơn kèm năm sao và lời giải hay nhất ????❤️
    toan-lop-8-bai-1-a-2y-3-b-frac-1-2-frac-1-3

  2. a) (2xy-3x^2)
    = x(2y-3x)
    b) (1/2 x+ 1/3)^2
    = (1/2 x)^2 +2. 1/2 .x . 1/3 +(1/3)^2
    = 1/4 x^2 +1/3 x +1/9

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222-9+11+12:2*14+14 = ? ( )

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