Respuesta :

Answer: [tex]-5x^{2} +9x-8[/tex]

Step-by-step explanation:

[tex](4x^2 + 7x - 5) - (9x^2 - 2x + 3)[/tex]

  1. Remove the parentheses for addition or subtraction:[tex]4x^2 + 7x - 5 - 9x^2 - 2x + 3[/tex]
  2. Reorder and gather like terms:   [tex](4x^2-9x^2)+(7x+2x)+(-5-3)[/tex]
  3. Collect coefficients of like terms:  [tex](4-9)x^{2} +(7x+2x)+(-5-3)[/tex]
  4. Collect coefficients of like terms:   [tex](4-9)x^{2} +(7+2)x+(-5-3)[/tex]
  5. Calculate the sum of difference:        [tex]-5x^{2} +(7+2)x+(-5-3)[/tex]
  6. Calculate the sum of difference:             [tex]-5x^{2} +9x+(-5-3)[/tex]
  7. Calculate the sum of difference:                   [tex]-5x^{2} +9x-8[/tex]