Respuesta :

Jiangshi

[tex]1. \: \: 10 {x}^{2} y - 5 {x}^{2} y = 5 {x}^{2} y \\ 2. \: \: - 3 x - (5x) - ( - 2x) \\ \: \: - 3x - 5x + 2x = \\ \: \: - 8x + 2x = - 6x[/tex]

Hope this helps :)

fieryanswererft

Answer:

(a)

  • 10x²y–5x²y
  • 5x²y

(b)

  • -3x– (5x)– (-2x)  
  • -3x -5x +2x              apply :  [ ( - (-a) ) = +a ]
  • -6x

add similar elements together; simplify.