Question

( 2-root 3) (2+root 3)

Answer 1

Step-by-step explanation:

See answer in above attachment

Answer 2

Answer:

7

Step-by-step explanation:

$(2 - \sqrt{3} )(2 + \sqrt{3} ) \\ 4 - 2 \sqrt{3} + 2 \sqrt{3} + 3 \\ 4 + 3 \\ 7$

right answer