Respuesta :

Answer:

2nd option

Step-by-step explanation:

(5x² - 4x - 1) - (- 4x² - 4)

remove first set of parenthesis and distribute second set by - 1

= 5x² - 4x - 1 + 4x² + 4 ← collect like terms

= 9x² - 4x + 3

AnjulaReddy
given ,

[tex](5x^{2}-4x-1)-(-4x^{2}-4)[/tex]

=> [tex] 5x^{2}-4x-1+4x^{2}+4[/tex]

=> [tex]9x^{2}-4x+3[/tex]

hence option two is correct