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

2nd option

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