Question

Can i have help with this

Answer 1

Given ,

$(5x^{2}-4x-1)-(-4x^{2}-4)$

=> $5x^{2}-4x-1+4x^{2}+4$

=> $9x^{2}-4x+3$

hence option two is correct

Answer 2

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