a, 3y(3x²-4x+1) b, (x+4)² có, 2x-3)³

2 bình luận về “a, 3y(3x²-4x+1) b, (x+4)² có, 2x-3)³”

1. a)3y(3x²-4x+1)=6x^2 y-12xy+3y

   b)(x+4)²=x^2+8x+16

   c)(2x-3)³=8x^3-36x^2+54x-27

   Trả lời
2. a) 3y( 3x² – 4x + 1 )

   = 9x²y – 12xu + 3y

   b) ( x + 4 )²

   = x² + 8x + 16

   c) ( 2x – 3 )³

   = 8x³ – 36x² + 36x – 27

   5 sao nha

   Trả lời