Question

help with thise please

http://prntscr.com/1zx2ec

Answer 1

(7 - √3)(-6 + √3)
-42 + 6√3 + 7√3 - 3
-45 + 13√3
13√3 - 45

Answer 2

so the answer's b?

Answer 3

Yes, sorry. Forgot there were options there. The answer is (B).

Answer 4

thank you