Answer:
1
Step-by-step explanation:
(- 2 - [tex]\sqrt{3}[/tex] )(- 2 + [tex]\sqrt{3}[/tex] )
each term in the second factor is multiplied by each term in the first factor.
- 2(- 2 + [tex]\sqrt{3}[/tex] ) - [tex]\sqrt{3}[/tex] (- 2 + [tex]\sqrt{3}[/tex] ) ← distribute both parenthesis
= 4 - 2[tex]\sqrt{3}[/tex] + 2[tex]\sqrt{3}[/tex] - 3 ← collect like terms
= 1
